Connect-AzAccount interactive login fails on macOS (Apple Silicon): "Interactive requests with mac broker enabled must be executed on the main thread"

[marcelovital]

Description

Connect-AzAccount (interactive browser flow) fails on macOS with the following error, starting in Az.Accounts 5.5.1:

WARNING: Unable to acquire token for tenant 'organizations' with error
'InteractiveBrowserCredential authentication failed: Interactive requests
with mac broker enabled must be executed on the main thread on macOS.'
Connect-AzAccount: InteractiveBrowserCredential authentication failed:
Interactive requests with mac broker enabled must be executed on the main
thread on macOS.

Environment

• Az.Accounts version (broken): 5.5.1
• Az.Accounts version (last known good): 5.2.0
• OS: macOS (Apple Silicon)
• PowerShell: 7.6.4 (pwsh)
• Shell/terminal: zsh, running inside Ghostty

Steps to reproduce

1. Install Az.Accounts 5.5.1 (via Install-Module -Name Az -Repository PSGallery)
2. Run Connect-AzAccount
3. Observe the error above instead of a browser window opening

Expected behavior

Interactive browser login opens as it did on 5.2.0.

Workaround found

Downgrading fixes it:

Uninstall-Module Az.Accounts -AllVersions -Force
Install-Module -Name Az.Accounts -RequiredVersion 5.2.0 -Repository PSGallery -Force -AllowClobber

Connect-AzAccount -UseDeviceAuthentication also works around it without downgrading, but the standard interactive flow should not require this.

Additional notes

This appears to be caused by the MSAL mac-broker interactive auth path requiring main-thread execution, which isn't guaranteed when pwsh is run from a non-default terminal host.

---

Duplicate of #29940 (filed from a different account by mistake; leaving that one open too so a maintainer can dedupe).

[github-actions]

Here are some similar issues that might help you. Please check if they can solve your problem.

• Connect-AzAccount interactive login fails on macOS (Apple Silicon): "Interactive requests with mac broker enabled must be executed on the main thread" #29940

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[uffectivevital]

Here are some similar issues that might help you. Please check if they can solve your problem.

• Connect-AzAccount interactive login fails on macOS (Apple Silicon): "Interactive requests with mac broker enabled must be executed on the main thread" #29940

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It is not similar, it's the exact same and it's closed. The error on this one is still present.

[garretth9]

In my own case reverting to 5.4.0 also fixed the issue, but both 5.5.1 and 5.5.2 resulted in the error above.