diff --git a/3-Aquiis.UI.Shared/wwwroot/js/theme.js b/3-Aquiis.UI.Shared/wwwroot/js/theme.js
index c82e64c..b496cc4 100644
--- a/3-Aquiis.UI.Shared/wwwroot/js/theme.js
+++ b/3-Aquiis.UI.Shared/wwwroot/js/theme.js
@@ -115,9 +115,9 @@ if (typeof localStorage !== "undefined") {
 
   // Start observing after a short delay to let Blazor initialize
   setTimeout(() => {
-    observer.observe(document.body, {
-      childList: true,
-      subtree: true,
+    observer.observe(document.documentElement, {
+      attributes: true,
+      attributeFilter: ["data-bs-theme", "data-brand-theme"],
     });
   }, 1000);
 
diff --git a/4-Aquiis.SimpleStart/Aquiis.SimpleStart.csproj b/4-Aquiis.SimpleStart/Aquiis.SimpleStart.csproj
index 8c0cbe1..58a8730 100644
--- a/4-Aquiis.SimpleStart/Aquiis.SimpleStart.csproj
+++ b/4-Aquiis.SimpleStart/Aquiis.SimpleStart.csproj
@@ -8,10 +8,10 @@
     <MigrationsDirectory>Data/Migrations</MigrationsDirectory>
     
     <!-- Semantic Versioning -->
-    <Version>1.1.0</Version>
-    <AssemblyVersion>1.1.0.0</AssemblyVersion>
-    <FileVersion>1.1.0.0</FileVersion>
-    <InformationalVersion>1.1.0</InformationalVersion>
+    <Version>1.1.1</Version>
+    <AssemblyVersion>1.1.1.0</AssemblyVersion>
+    <FileVersion>1.1.1.0</FileVersion>
+    <InformationalVersion>1.1.1</InformationalVersion>
   </PropertyGroup>
 
    <ItemGroup>
diff --git a/4-Aquiis.SimpleStart/ElectronHostHook/package-lock.json b/4-Aquiis.SimpleStart/ElectronHostHook/package-lock.json
index b4925d3..39d9430 100644
--- a/4-Aquiis.SimpleStart/ElectronHostHook/package-lock.json
+++ b/4-Aquiis.SimpleStart/ElectronHostHook/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "aquiis-simplestart-electron",
-  "version": "1.0.0",
+  "version": "1.1.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "aquiis-simplestart-electron",
-      "version": "1.0.0",
+      "version": "1.1.1",
       "dependencies": {
         "dasherize": "^2.0.0"
       }
diff --git a/4-Aquiis.SimpleStart/ElectronHostHook/package.json b/4-Aquiis.SimpleStart/ElectronHostHook/package.json
index f727825..ee9e89b 100644
--- a/4-Aquiis.SimpleStart/ElectronHostHook/package.json
+++ b/4-Aquiis.SimpleStart/ElectronHostHook/package.json
@@ -1,6 +1,6 @@
 {
   "name": "aquiis-simplestart-electron",
-  "version": "1.0.0",
+  "version": "1.1.1",
   "description": "Aquiis SimpleStart Electron Host",
   "main": "main.js",
   "dependencies": {
diff --git a/4-Aquiis.SimpleStart/Program.cs b/4-Aquiis.SimpleStart/Program.cs
index a95f4f4..5f51fe9 100644
--- a/4-Aquiis.SimpleStart/Program.cs
+++ b/4-Aquiis.SimpleStart/Program.cs
@@ -745,9 +745,10 @@
         Height = 900,
         MinWidth = 800,
         MinHeight = 600,
-        Show = false
+        Show = false,
+        AutoHideMenuBar = true
     });
-
+    window.RemoveMenu();
     window.OnReadyToShow += () => window.Show();
     window.SetTitle("Aquiis Property Management");
     
diff --git a/4-Aquiis.SimpleStart/README.md b/4-Aquiis.SimpleStart/README.md
index 729cdf0..a1a1a79 100644
--- a/4-Aquiis.SimpleStart/README.md
+++ b/4-Aquiis.SimpleStart/README.md
@@ -1,16 +1,16 @@
 # Aquiis - Property Management System
 
-![.NET 9.0](https://img.shields.io/badge/.NET-9.0-blue)
-![ASP.NET Core](https://img.shields.io/badge/ASP.NET%20Core-9.0-blueviolet)
+![.NET 10.0](https://img.shields.io/badge/.NET-10.0-blue)
+![ASP.NET Core](https://img.shields.io/badge/ASP.NET%20Core-10.0-blueviolet)
 ![Blazor Server](https://img.shields.io/badge/Blazor-Server-orange)
-![Entity Framework](https://img.shields.io/badge/Entity%20Framework-9.0-green)
+![Entity Framework](https://img.shields.io/badge/Entity%20Framework-10.0-green)
 ![SQLite](https://img.shields.io/badge/Database-SQLite-lightblue)
 
-A comprehensive web-based property management system built with ASP.NET Core 9.0 and Blazor Server. Aquiis streamlines rental property management for property owners, managers, and tenants with an intuitive interface and robust feature set.
+A comprehensive web-based property management system built with ASP.NET Core 10.0 and Blazor Server. Aquiis streamlines rental property management for property owners and managers with an intuitive interface and robust feature set.
 
 ## 🏢 Overview
 
-Aquiis is designed to simplify property management operations through a centralized platform that handles everything from property listings and tenant management to lease tracking and document storage. Built with modern web technologies, it provides a responsive, secure, and scalable solution for property management professionals.
+Aquiis is designed to simplify property management operations through a centralized platform that handles everything from property, tenant, and lease tracking to document storage and rental invoice and expense tracking. Built with modern web technologies including AI (GitHub Copilot and Claude Sonnet), it provides a responsive, secure, and scalable solution for DIY landlords and property managers.
 
 ## ✨ Key Features
 
@@ -28,9 +28,7 @@ Aquiis is designed to simplify property management operations through a centrali
 - **Tenant Profiles** - Complete tenant information management
 - **Contact Management** - Phone, email, emergency contacts
 - **Tenant History** - Track tenant interactions and lease history
-- **Tenant Portal** - Dedicated tenant dashboard and self-service features
 - **Communication Tools** - Built-in messaging and notification system
-- **Tenant Screening** - Application and background check workflow
 
 ### 📄 Lease Management
 
@@ -38,7 +36,7 @@ Aquiis is designed to simplify property management operations through a centrali
 - **Lease Tracking** - Active, pending, expired, and terminated lease monitoring
 - **Rent Tracking** - Monthly rent amounts and payment schedules
 - **Security Deposits** - Deposit tracking and management
-- **Lease Renewals** - Automated renewal notifications and processing
+- **Lease Renewals** - Manual lease renewal tracking
 - **Terms Management** - Flexible lease terms and conditions
 
 ### 💰 Financial Management
@@ -54,14 +52,10 @@ Aquiis is designed to simplify property management operations through a centrali
 
 - **File Storage** - Secure document upload and storage
 - **Document Categories** - Organized by type (leases, receipts, photos, etc.)
-- **Version Control** - Document revision tracking
-- **Digital Signatures** - Electronic signature support
-- **Document Sharing** - Secure document sharing with tenants
-- **Bulk Operations** - Mass document upload and organization
 
 ### 🔐 User Management & Security
 
-- **Role-Based Access** - Administrator, Property Manager, and Tenant roles
+- **Role-Based Access** - Administrator and Property Manager roles
 - **Authentication** - Secure login with ASP.NET Core Identity
 - **User Profiles** - Comprehensive user account management
 - **Permission Management** - Granular access control
@@ -80,9 +74,9 @@ Aquiis is designed to simplify property management operations through a centrali
 
 ### Backend
 
-- **Backend**: ASP.NET Core 9.0
+- **Backend**: ASP.NET Core 10.0
 - **UI Framework**: Blazor Server
-- **Database**: SQLite with Entity Framework Core 9.0
+- **Database**: SQLite with Entity Framework Core 10.0
 - **Authentication**: ASP.NET Core Identity
 - **Architecture**: Clean Architecture with vertical slice organization
 
@@ -101,10 +95,11 @@ Aquiis is designed to simplify property management operations through a centrali
 - **Version Control**: Git with GitHub integration
 - **Package Management**: NuGet
 - **Build System**: .NET SDK build system
+- **AI Assisted Coding**: GitHub Copilot, Claude Sonnet, GPT
 
 ## 📋 Prerequisites
 
-- [.NET 9.0 SDK](https://dotnet.microsoft.com/download/dotnet/9.0)
+- [.NET 10.0 SDK](https://dotnet.microsoft.com/download/dotnet/10.0)
 - [Git](https://git-scm.com/)
 - [Visual Studio Code](https://code.visualstudio.com/) (recommended) or Visual Studio 2022
 - [C# Dev Kit Extension](https://marketplace.visualstudio.com/items?itemName=ms-dotnettools.csdevkit) for VS Code
@@ -318,7 +313,7 @@ Shared → Core
 
 ## 🔑 Default User Roles
 
-The system includes three primary user roles:
+The system includes two primary user roles:
 
 ### Administrator
 
@@ -335,14 +330,6 @@ The system includes three primary user roles:
 - Financial tracking
 - Document management
 
-### Tenant
-
-- Personal dashboard
-- Lease information access
-- Payment history
-- Maintenance requests
-- Document viewing
-
 ## 🎯 Key Components
 
 ### Property Management Service
@@ -391,14 +378,6 @@ Core business logic service in the Application layer:
 - Administrative quick actions
 - Recent system activity
 
-### Tenant Dashboard
-
-- Personal lease information
-- Payment history
-- Maintenance requests
-- Document access
-- Communication center
-
 ## 🔧 Configuration
 
 ### Application Settings
@@ -422,7 +401,7 @@ Configuration is managed through:
 
 ### Prerequisites for Production
 
-- Windows/Linux server with .NET 9.0 runtime
+- Windows/Linux server with .NET 10.0 runtime
 - IIS or reverse proxy (nginx/Apache)
 - SSL certificate for HTTPS
 - Database server (or SQLite for smaller deployments)
@@ -474,7 +453,7 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 ### Common Issues
 
 1. **Database Connection Issues**: Verify SQLite file permissions and path
-2. **Build Errors**: Ensure .NET 9.0 SDK is installed
+2. **Build Errors**: Ensure .NET 10.0 SDK is installed
 3. **Authentication Problems**: Check Identity configuration and user roles
 4. **Performance Issues**: Review database indexing and query optimization
 
@@ -487,14 +466,13 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 
 ## 🏗️ Roadmap
 
-### Upcoming Features
+### Upcoming Features via Aquiis Professional
 
 - Mobile application support
 - Advanced reporting and analytics
 - Integration with accounting software
 - Automated rent collection
 - Multi-language support
-- Advanced tenant screening
 - IoT device integration
 - API for third-party integrations
 
@@ -510,4 +488,4 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 
 **Aquiis** - Streamlining Property Management for the Modern World
 
-Built with ❤️ using ASP.NET Core 9.0 and Blazor Server
+Built with ❤️ using ASP.NET Core 10.0, Blazor Server, and AI Tools (GitHub Copilot and Claude Sonnet)
diff --git a/4-Aquiis.SimpleStart/Shared/Components/Account/Pages/Login.razor b/4-Aquiis.SimpleStart/Shared/Components/Account/Pages/Login.razor
index 2a44cd1..522d8c7 100644
--- a/4-Aquiis.SimpleStart/Shared/Components/Account/Pages/Login.razor
+++ b/4-Aquiis.SimpleStart/Shared/Components/Account/Pages/Login.razor
@@ -39,7 +39,17 @@
                     </label>
                 </div>
                 <div>
-                    <button type="submit" class="w-100 btn btn-lg btn-primary">Log in</button>
+                    <button type="submit" class="w-100 btn btn-lg btn-primary" disabled="@isSubmitting">
+                        @if (isSubmitting)
+                        {
+                            <span class="spinner-border spinner-border-sm me-2" role="status" aria-hidden="true"></span>
+                            <span>Logging in...</span>
+                        }
+                        else
+                        {
+                            <span>Log in</span>
+                        }
+                    </button>
                 </div>
                 <div>
                     <p>
@@ -66,6 +76,7 @@
 
 @code {
     private string? errorMessage;
+    private bool isSubmitting = false;
 
     [CascadingParameter]
     private HttpContext HttpContext { get; set; } = default!;
@@ -103,28 +114,42 @@
 
     public async Task LoginUser()
     {
-        // This doesn't count login failures towards account lockout
-        // To enable password failures to trigger account lockout, set lockoutOnFailure: true
-        var result = await SignInManager.PasswordSignInAsync(Input.Email, Input.Password, Input.RememberMe, lockoutOnFailure: false);
-        if (result.Succeeded)
-        {
-            Logger.LogInformation("User logged in.");
-            RedirectManager.RedirectTo(ReturnUrl);
-        }
-        else if (result.RequiresTwoFactor)
-        {
-            RedirectManager.RedirectTo(
-                "Account/LoginWith2fa",
-                new() { ["returnUrl"] = ReturnUrl, ["rememberMe"] = Input.RememberMe });
-        }
-        else if (result.IsLockedOut)
+        // Prevent double submission
+        if (isSubmitting)
+            return;
+
+        try
         {
-            Logger.LogWarning("User account locked out.");
-            RedirectManager.RedirectTo("Account/Lockout");
+            isSubmitting = true;
+            errorMessage = null;
+            
+            // This doesn't count login failures towards account lockout
+            // To enable password failures to trigger account lockout, set lockoutOnFailure: true
+            var result = await SignInManager.PasswordSignInAsync(Input.Email, Input.Password, Input.RememberMe, lockoutOnFailure: false);
+            if (result.Succeeded)
+            {
+                Logger.LogInformation("User logged in.");
+                RedirectManager.RedirectTo(ReturnUrl);
+            }
+            else if (result.RequiresTwoFactor)
+            {
+                RedirectManager.RedirectTo(
+                    "Account/LoginWith2fa",
+                    new() { ["returnUrl"] = ReturnUrl, ["rememberMe"] = Input.RememberMe });
+            }
+            else if (result.IsLockedOut)
+            {
+                Logger.LogWarning("User account locked out.");
+                RedirectManager.RedirectTo("Account/Lockout");
+            }
+            else
+            {
+                errorMessage = "Error: Invalid login attempt.";
+            }
         }
-        else
+        finally
         {
-            errorMessage = "Error: Invalid login attempt.";
+            isSubmitting = false;
         }
     }
 
diff --git a/4-Aquiis.SimpleStart/Shared/Layout/NavMenu.razor b/4-Aquiis.SimpleStart/Shared/Layout/NavMenu.razor
index 1978dba..b8cf783 100644
--- a/4-Aquiis.SimpleStart/Shared/Layout/NavMenu.razor
+++ b/4-Aquiis.SimpleStart/Shared/Layout/NavMenu.razor
@@ -19,7 +19,7 @@
 
 <input type="checkbox" title="Navigation menu" class="navbar-toggler" />
 
-<div class="nav-scrollable" onclick="document.querySelector('.navbar-toggler').click()">
+<div class="nav-scrollable">
     <nav class="nav flex-column">
         
         <OrganizationAuthorizeView Roles="Owner,Administrator">
@@ -336,7 +336,13 @@
 
     private async void OnLocationChanged(object? sender, LocationChangedEventArgs e)
     {
-        currentUrl = NavigationManager.ToBaseRelativePath(e.Location);
+        var newUrl = NavigationManager.ToBaseRelativePath(e.Location);
+        
+        // Only update if URL actually changed (prevents visual glitch on same-link clicks)
+        if (newUrl == currentUrl)
+            return;
+            
+        currentUrl = newUrl;
         
         // Re-apply current theme and brand theme after navigation
         try
diff --git a/4-Aquiis.SimpleStart/appsettings.json b/4-Aquiis.SimpleStart/appsettings.json
index 376b00b..bae353a 100644
--- a/4-Aquiis.SimpleStart/appsettings.json
+++ b/4-Aquiis.SimpleStart/appsettings.json
@@ -14,7 +14,7 @@
   "ApplicationSettings": {
     "AppName": "Aquiis",
     "ProductName": "Aquiis SimpleStart",
-    "Version": "1.1.0",
+    "Version": "1.1.1",
     "Author": "CIS Guru",
     "Email": "cisguru@outlook.com",
     "Repository": "https://github.com/xnodeoncode/Aquiis",
diff --git a/4-Aquiis.SimpleStart/electron.manifest.json b/4-Aquiis.SimpleStart/electron.manifest.json
index 9ea9a6b..5f81883 100644
--- a/4-Aquiis.SimpleStart/electron.manifest.json
+++ b/4-Aquiis.SimpleStart/electron.manifest.json
@@ -17,7 +17,7 @@
     "appId": "com.aquiis.propertymanagement",
     "productName": "Aquiis",
     "copyright": "Copyright © 2026",
-    "buildVersion": "1.1.0",
+    "buildVersion": "1.1.1",
     "compression": "normal",
     "directories": {
       "output": "../../../bin/Desktop"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29f4b19..0563420 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,92 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ---
 
+## [1.1.1] - 2026-02-28
+
+### 🐛 Bug Fix & Enhancement Release
+
+**Aquiis SimpleStart v1.1.1** addresses critical UI bugs and completes Windows database encryption support. This is a patch release with no database schema changes.
+
+### Added
+
+#### Windows Enhancements
+
+- **Windows database encryption implementation** using DPAPI (Data Protection API) for secure key storage
+- **Windows installer deployment** - switched from portable executable to proper installer with uninstall support, start menu shortcuts, and desktop icon
+
+#### UI Improvements
+
+- **Visual feedback during login** - spinner and "Logging in..." text displayed during authentication
+- **Login button disabled during authentication** to prevent double-submission
+- **Hidden Electron menu bar** - Auto-hide menu bar for cleaner, more native desktop experience
+
+### Changed
+
+#### Theme System Optimization
+
+- **Optimized MutationObserver** to only watch theme attributes on `documentElement` instead of entire `document.body`
+  - **Previous behavior:** Watched entire body with `childList: true, subtree: true` (triggered on every Blazor render)
+  - **Current behavior:** Only watches `data-bs-theme` and `data-brand-theme` attributes
+  - **Impact:** Prevents unnecessary reflow operations during navigation
+
+#### Navigation Improvements
+
+- **Added guard in OnLocationChanged** to skip processing when URL unchanged
+- **Prevents redundant theme re-application** on repeated same-link clicks
+
+### Fixed
+
+#### Theme Issues
+
+- **Fixed brand theme flicker** when clicking same NavLink repeatedly
+  - **Issue:** Clicking Dashboard (or any nav item) multiple times switched brand theme from Obsidian/Teal to Bootstrap light theme
+  - **Root cause:** MutationObserver firing on every NavLink re-render, triggering DOM reflow operations (`document.documentElement.style.display = "none"`) that briefly reset CSS
+  - **Solution:** Optimized observer scope to only watch specific theme attributes + added OnLocationChanged guard to prevent redundant processing
+
+#### Authentication Issues
+
+- **Fixed login double-submit** causing blank page redirect
+  - **Issue:** Rapid login button clicks caused concurrent authentication attempts, resulting in navigation to blank page
+  - **Root cause:** No submission guard preventing multiple `PasswordSignInAsync` calls
+  - **Solution:** Added `isSubmitting` flag with early return guard, button disabled during login, `finally` block ensures flag reset even on exceptions
+
+### Documentation
+
+#### Cross-References
+
+- Added cross-references between README and Quick Start Guide
+- Added cross-references between README and Database Management Guide
+- Added cross-references between Database Management Guide and Compatibility Matrix
+- Improved documentation navigation flow for new users
+
+#### Table Formatting
+
+- Fixed markdown table alignment in Database-Management-Guide.md for better readability
+
+### Technical Details
+
+- **Application Version:** 1.1.1
+- **Database Schema Version:** 1.1.0 (unchanged from v1.1.0)
+- **Assembly Version:** 1.1.1.0
+- **Electron Package:** 1.1.1
+- **Files Changed:** 5 (theme.js, Login.razor, NavMenu.razor, Database-Management-Guide.md, README.md)
+- **Lines Changed:** 79 insertions(+), 32 deletions(-)
+
+### Upgrade Notes
+
+- **From v1.1.0:** No database migration required (schema unchanged). Simply install new version.
+- **From v1.0.0:** Automatic migration to v1.1.0 schema will run first, then v1.1.1 application starts.
+- **Windows Users:** Uninstall portable version if present, then install new installer version.
+- **Database Location:** Unchanged - schema version remains 1.1.0.
+
+### Compatibility
+
+- **Compatible with:** Database schema v1.1.0
+- **Upgrade path:** v1.0.0 → v1.1.0 (auto-migration) → v1.1.1 (no migration)
+- **Downgrade:** Not recommended - use backup/restore instead
+
+---
+
 ## [1.0.0] - 2026-01-29
 
 ### 🎉 Initial Production Release
diff --git a/Documentation/Compatibility-Matrix.md b/Documentation/Compatibility-Matrix.md
index 5380ee6..7421719 100644
--- a/Documentation/Compatibility-Matrix.md
+++ b/Documentation/Compatibility-Matrix.md
@@ -1,8 +1,8 @@
 # Aquiis Compatibility Matrix
 
-**Last Updated:** February 1, 2026  
-**Current Release:** v1.0.1 (SimpleStart) | v0.3.0 (Professional)  
-**Next Release:** v1.1.0 (SimpleStart) | v0.3.1 (Professional)
+**Last Updated:** February 28, 2026  
+**Current Release:** v1.1.1 (SimpleStart) | v0.3.0 (Professional)  
+**Next Release:** v1.2.0 (SimpleStart) | v0.3.1 (Professional)
 
 ---
 
@@ -24,8 +24,10 @@ This matrix tracks version compatibility across Aquiis releases, enabling you to
 
 | Release Date | App Version | Database Schema | .NET SDK | ElectronNET | Bootstrap | QuestPDF  | Migration Required | Breaking Changes | Status             | Download                                                             |
 | ------------ | ----------- | --------------- | -------- | ----------- | --------- | --------- | ------------------ | ---------------- | ------------------ | -------------------------------------------------------------------- |
-| TBD          | **1.1.0**   | v1.1.0          | 10.0.1   | 23.6.2      | 5.3.3     | 2025.12.1 | Yes (v1.0.0→1.1.0) | New tables/cols  | **In Development** | -                                                                    |
-| 2026-01-29   | 1.0.1       | v1.0.0          | 10.0.1   | 23.6.2      | 5.3.3     | 2025.12.1 | No                 | No               | **Current**        | [Release](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.0.1) |
+| TBD          | **1.2.0**   | v1.2.0          | 10.0.1   | 23.6.2      | 5.3.3     | 2025.12.1 | Yes (v1.1.0→1.2.0) | TBD              | **In Development** | -                                                                    |
+| 2026-02-28   | 1.1.1       | v1.1.0          | 10.0.1   | 23.6.2      | 5.3.3     | 2025.12.1 | No                 | No               | **Current**        | [Release](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.1.1) |
+| 2026-02-18   | 1.1.0       | v1.1.0          | 10.0.1   | 23.6.2      | 5.3.3     | 2025.12.1 | Yes (v1.0.0→1.1.0) | New tables/cols  | Superseded         | [Release](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.1.0) |
+| 2026-01-29   | 1.0.1       | v1.0.0          | 10.0.1   | 23.6.2      | 5.3.3     | 2025.12.1 | No                 | No               | Superseded         | [Release](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.0.1) |
 | 2026-01-28   | 1.0.0       | v1.0.0          | 10.0.1   | 23.6.2      | 5.3.3     | 2025.12.1 | No                 | No               | Superseded         | [Release](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.0.0) |
 
 ## Professional Version History
@@ -97,7 +99,7 @@ This matrix tracks version compatibility across Aquiis releases, enabling you to
 
 **Current Schema:**
 
-- **SimpleStart:** v1.1.0 (in development)
+- **SimpleStart:** v1.1.0 (current)
 - **Professional:** v0.0.0 (pre-release)
 
 ### Schema Version Strategy
diff --git a/Documentation/Database-Management-Guide.md b/Documentation/Database-Management-Guide.md
index 2c1432b..8754fc2 100644
--- a/Documentation/Database-Management-Guide.md
+++ b/Documentation/Database-Management-Guide.md
@@ -1,7 +1,7 @@
 # Aquiis SimpleStart - Database Management Guide
 
-**Version:** 1.1.0  
-**Last Updated:** February 18, 2026  
+**Version:** 1.1.1  
+**Last Updated:** February 28, 2026  
 **Audience:** Administrators and Power Users
 
 ---
@@ -114,10 +114,15 @@ When you upgrade Aquiis SimpleStart to a new version:
 
 **No manual intervention required** - migrations are automatic and seamless!
 
+**Version Upgrade Compatibility:**  
+Not all version upgrades are supported automatically. Check the **[Compatibility Matrix](Compatibility-Matrix.md)** before upgrading to see if your current version can auto-migrate to the target version, or if manual steps are required.
+
 #### Migration to v1.1.0
 
 When upgrading from v1.0.0 to v1.1.0, the following schema changes are automatically applied:
 
+> **Note:** For complete version compatibility information and upgrade paths, see the **[Compatibility Matrix](Compatibility-Matrix.md)**.
+
 **New Tables:**
 
 - **DatabaseSettings** - Tracks encryption state and configuration
@@ -150,6 +155,9 @@ When upgrading from v1.0.0 to v1.1.0, the following schema changes are automatic
 
 **Important:** v1.1.0 application **requires** v1.1.0 database schema - the DatabaseSettings table is queried on startup. Running v1.1.0 app with v1.0.0 database will result in an error.
 
+**Version Compatibility:**  
+See the **[Compatibility Matrix](Compatibility-Matrix.md)** for detailed information about which app versions work with which database versions, and whether automatic migration is available.
+
 ---
 
 ## 🔐 Backup Procedures
@@ -972,13 +980,13 @@ The compiled model lives in `1-Aquiis.Infrastructure/Data/CompiledModels/` and i
 
 **When to regenerate the compiled model:**
 
-| Change | Re-run optimize? |
-|---|---|
-| Add / remove entity or property | ✅ Yes |
-| Add / modify relationship or index | ✅ Yes |
-| Rename entity or property | ✅ Yes |
-| Data-only migration (seed data, no schema change) | ❌ No |
-| Bug fix with no model changes | ❌ No |
+| Change                                            | Re-run optimize? |
+| ------------------------------------------------- | ---------------- |
+| Add / remove entity or property                   | ✅ Yes           |
+| Add / modify relationship or index                | ✅ Yes           |
+| Rename entity or property                         | ✅ Yes           |
+| Data-only migration (seed data, no schema change) | ❌ No            |
+| Bug fix with no model changes                     | ❌ No            |
 
 > **Note:** If the compiled model is stale, EF Core throws an `InvalidOperationException` at startup — the app will not silently use wrong metadata.
 
diff --git a/Documentation/Quick-Start-Guide.md b/Documentation/Quick-Start-Guide.md
index c63f653..4418ba1 100644
--- a/Documentation/Quick-Start-Guide.md
+++ b/Documentation/Quick-Start-Guide.md
@@ -1,7 +1,7 @@
 # Aquiis SimpleStart - Quick Start Guide
 
-**Version:** 1.1.0  
-**Last Updated:** February 18, 2026  
+**Version:** 1.1.1  
+**Last Updated:** February 28, 2026  
 **Estimated Time:** 15 minutes
 
 ---
@@ -33,7 +33,7 @@ Before you begin, ensure you have:
 - **Hardware:**
   - 2 GB RAM minimum (4 GB recommended)
   - 500 MB disk space
-- **Downloaded:** Aquiis SimpleStart v1.1.0 installer for your platform
+- **Downloaded:** Aquiis SimpleStart v1.1.1 installer for your platform
 
 ### Universal Linux Support:
 
diff --git a/README.md b/README.md
index 8b8e602..8d10b89 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 **Modern Property Management for Landlords**
 
-[![Version](https://img.shields.io/badge/version-1.1.0-blue.svg)](https://github.com/xnodeoncode/Aquiis/releases)
+[![Version](https://img.shields.io/badge/version-1.1.1-blue.svg)](https://github.com/xnodeoncode/Aquiis/releases)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
 [![.NET](https://img.shields.io/badge/.NET-10.0-purple.svg)](https://dotnet.microsoft.com/)
 [![Platform](https://img.shields.io/badge/platform-Linux%20%7C%20Windows-lightgrey.svg)](#installation)
@@ -76,12 +76,12 @@
 
 ## � Download
 
-**Latest Release: v1.1.0**
+**Latest Release: v1.1.1**
 
-[![Download for Linux](https://img.shields.io/badge/Download-Linux%20AppImage-blue.svg?style=for-the-badge&logo=linux)](https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.0/Aquiis-1.1.0-x86_64.AppImage)
-[![Download for Windows](https://img.shields.io/badge/Download-Windows%20Setup-blue.svg?style=for-the-badge&logo=windows)](https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.0/Aquiis-1.1.0-x64-Setup.exe)
+[![Download for Linux](https://img.shields.io/badge/Download-Linux%20AppImage-blue.svg?style=for-the-badge&logo=linux)](https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.1/Aquiis-1.1.1-x86_64.AppImage)
+[![Download for Windows](https://img.shields.io/badge/Download-Windows%20Setup-blue.svg?style=for-the-badge&logo=windows)](https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.1/Aquiis-1.1.1-x64-Setup.exe)
 
-**All Downloads:** [View v1.1.0 Release](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.1.0)
+**All Downloads:** [View v1.1.1 Release](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.1.1)
 
 ---
 
@@ -93,31 +93,31 @@
 
 ```bash
 # Download from releases page or use wget
-wget https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.0/Aquiis-1.1.0-x86_64.AppImage
+wget https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.1/Aquiis-1.1.1-x86_64.AppImage
 
 # Make executable
-chmod +x Aquiis-1.1.0-x86_64.AppImage
+chmod +x Aquiis-1.1.1-x86_64.AppImage
 
 # Option 1: Desktop integration (recommended)
-wget https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.0/install-desktop-integration.sh
+wget https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.1/install-desktop-integration.sh
 chmod +x install-desktop-integration.sh
-./install-desktop-integration.sh Aquiis-1.1.0-x86_64.AppImage
+./install-desktop-integration.sh Aquiis-1.1.1-x86_64.AppImage
 
 # Option 2: Run directly
-./Aquiis-1.1.0-x86_64.AppImage
+./Aquiis-1.1.1-x86_64.AppImage
 ```
 
 #### Windows (Installer or Portable)
 
 **Option A: Installer (Recommended)**
 
-1. **Download** `Aquiis-1.1.0-x64-Setup.exe` from [releases page](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.1.0)
+1. **Download** `Aquiis-1.1.1-x64-Setup.exe` from [releases page](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.1.1)
 2. **Run installer** and follow the setup wizard
 3. **Launch** from Start Menu or Desktop shortcut
 
 **Option B: Portable Executable**
 
-1. **Download** `Aquiis-1.1.0-x64-Portable.exe` from [releases page](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.1.0)
+1. **Download** `Aquiis-1.1.1-x64-Portable.exe` from [releases page](https://github.com/xnodeoncode/Aquiis/releases/tag/v1.1.1)
 2. **Move to permanent location** (e.g., `C:\Program Files\Aquiis\`)
    - ⚠️ Database and settings are stored relative to the .exe location
 3. **Double-click** to run
@@ -128,13 +128,13 @@ chmod +x install-desktop-integration.sh
 
 ```bash
 # Download checksums
-wget https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.0/checksums.txt
+wget https://github.com/xnodeoncode/Aquiis/releases/download/v1.1.1/checksums.txt
 
 # Linux
 sha256sum -c checksums.txt
 
 # Windows PowerShell
-Get-FileHash "Aquiis-1.1.0-x64-Setup.exe" -Algorithm SHA256
+Get-FileHash "Aquiis-1.1.1-x64-Setup.exe" -Algorithm SHA256
 ```
 
 ### First Run
@@ -144,6 +144,8 @@ Get-FileHash "Aquiis-1.1.0-x64-Setup.exe" -Algorithm SHA256
 3. Register your **first user account**
 4. Start managing properties!
 
+**New to Aquiis?** Follow our **[Quick Start Guide](Documentation/Quick-Start-Guide.md)** for a 15-minute tutorial.
+
 ### 15-Minute Tutorial
 
 Follow our [Quick Start Guide](Documentation/Quick-Start-Guide.md) to:
@@ -186,13 +188,19 @@ Aquiis is available as a portable Windows executable (.exe). No installation req
 - All dependencies bundled (no installation required)
 - Optional: SendGrid (email) and Twilio (SMS) for notifications
 
+### Data & Backups
+
+- SQLite database stored locally in application data folder
+- Regular backups recommended (manual or scheduled)
+- See **[Database Management Guide](Documentation/Database-Management-Guide.md)** for backup/restore procedures
+
 ---
 
 ## 📚 Documentation
 
 ### User Documentation
 
-- 📖 **[Release Notes](Documentation/v1.1.0/v1.1.0-Release-Notes.md)** - What's new in v1.1.0
+- 📖 **[Release Notes](Documentation/v1.1.1/v1.1.1-Release-Notes.md)** - What's new in v1.1.1
 - 🚀 **[Quick Start Guide](Documentation/Quick-Start-Guide.md)** - Get started in 15 minutes
 - 💾 **[Database Management Guide](Documentation/Database-Management-Guide.md)** - Backup, restore, troubleshooting
 - 🔒 **[Security Features](Documentation/v1.1.0/Security-Enhancements.md)** - Database encryption, CSP, and more
@@ -315,15 +323,28 @@ We use [Semantic Versioning](https://semver.org/):
 - **MINOR** version (0.X.0): New features, UI changes (backward compatible)
 - **PATCH** version (0.0.X): Bug fixes, minor updates
 
-**Current version:** 1.1.0 (Security and schema enhancement release)
+**Current version:** 1.1.1 (Patch release with Windows encryption and bug fixes)
 **Database version:** 1.1.0
 
 ---
 
 ## 🗺️ Roadmap
 
+### v1.1.1 (Released February 2026) ✅
+
+**Bug Fixes & Windows Enhancements**
+
+- ✅ Windows database encryption implementation (DPAPI)
+- ✅ Windows installer deployment (replaced portable)
+- ✅ Fixed brand theme flicker on repeated NavLink clicks
+- ✅ Fixed login double-submit causing blank page
+- ✅ Documentation navigation improvements
+- ✅ Database schema v1.1.0 (unchanged from v1.1.0)
+
 ### v1.1.0 (Released February 2026) ✅
 
+**Security & Schema Enhancement Release**
+
 - ✅ Database encryption at rest (SQLCipher AES-256)
 - ✅ OS keychain integration (Linux)
 - ✅ Sample data management (IsSampleData flag)
@@ -402,7 +423,7 @@ Licensed under the **MIT License** - see [LICENSE](LICENSE) file for details.
 
 ## 🎊 Status
 
-**v1.1.0 - Security & Schema Enhancement Release** 🎉
+**v1.1.1 - Bug Fix & Windows Enhancement Release** 🎉
 
 - ✅ **Production Ready**
 - ✅ **303 tests passing**