Yonke imikhiqizo Community Forum

Dear, I use my personnal account to contact you for a problem on my Professional Thunderbird mail box. I am using for my job a Professional Thunderbird mail box Version 140.4.0esr (64-bit). Before, I had to enter only the mail adress with password. Now, a double authentification with Microsoft Authenticator is required; but no mobile terminal is dedicated to this mail box so I cannot have access anymore. Do you have a solution ?

Thank you,

Best regards

Jean Salabelle

Hi everyone, I’m facing a very strange issue when trying to authenticate a Hotmail account via Microsoft OAuth2 in Thunderbird (and also in Firefox).

When the Microsoft login popup appears, I **cannot focus the password field or the verification code field**. The focus just cycles through other UI elements (buttons, dots at the bottom right, etc.), but **never stays inside the input field**, so I can’t type anything. Clicking into the field does not help — the focus immediately jumps away again.

This only happens in:

• Thunderbird 128.12.0 ESR (32-bit) on Windows 10
• Firefox (same behavior)

But Edge and Chrome work normally.

What I already tried (no success):

- Removing OAuth tokens and clearing authentication files in Thunderbird - Disabling Enhanced Tracking Protection in Firefox - Disabling browser extensions (ad-blockers, NoScript, Privacy tools) - Checking and modifying Firefox `about:config` privacy settings - Clearing and re-authorizing the app under Microsoft Account permissions - Restarting in Firefox Troubleshooting Mode - Switching temporarily between OAuth2 and Normal Password authentication - Testing on fresh login windows after restarting Thunderbird - Maximizing the popup, using tab/keyboard navigation tricks - Turning off Windows Security controlled folder access - Testing with different networks

None of the above solved the issue.

Additional notes / clues:

• Problem affects only **Thunderbird + Firefox**, not Chromium browsers
• Windows 10 system
• Thunderbird is running **32-bit ESR**, so it uses Gecko/Firefox ESR 115 engine
• This looks like a **focus bug in the Microsoft OAuth WebView implementation** on Gecko-based apps
• I can't complete the OAuth login, so I’m stuck without access to the account

What I’m asking the community:

• Is this a **known ESR bug** with Microsoft OAuth?
• Is there a workaround or patch for Gecko WebView secure input fields?
• Any configuration that I may have missed?

Any help or guidance would be greatly appreciated. Thanks in advance!

Roberto

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