( Read and write access to mailboxes via POP.).( Read and write access to mailboxes via IMAP.).If you encounter a screen saying “Need admin approval” during the login process, please contact your IT administrators to approve the client ID 9e5f94bc-e8a4-4e73-b8be-63364c29d753 for Mozilla Thunderbird (it previously appeared to non-admins as “Mzla Technologies Corporation”). However, some of these accounts are configured to require administrators to approve any applications accessing email. In order to meet Microsoft’s requirements for publisher verification, it was necessary for us to switch to a new Azure application and application ID. This may involve some extra work for users currently using Microsoft-hosted accounts through their employer or educational institution. On Wednesday, January 18, Thunderbird 102.7.0 will be released with a crucial change to how we handle OAuth2 authorization with Microsoft accounts.

However, you can launch the Profile Manager if needed by following these instructions. Thunderbird should automatically detect your existing profile. *Users who update and encounter difficulty can simply reinstall 102.6.1. Please note that automatic updates are currently disabled, and users of Microsoft 365 Business are cautioned to not update. Version 102.7.0 is now available for manual download only, to allow unaffected users to choose to update and benefit from the fixes it delivers. Thunderbird 102.7.0 was scheduled to be released on Wednesday, January 18, but we decided to hold the release because of an issue detected which affects authentication of Microsoft 365 Business accounts.Ī solution to the authentication issue will ship with version 102.7.1, releasing during the week of January 23. You can track this issue via Bug #1810760. We apologize for the inconvenience this has caused, and the disruption to your workflow. A revised solution has been proposed and is expected to ship soon. Some users still experienced issues with the solution to the authentication issue that was included in Thunderbird 102.7.1. Our anticipated release window is before midnight Pacific Time, January 31. We’re preparing to ship a 2nd build of Thunderbird 102.7.1 with an improved patch for the Microsoft 365 oAuth issue reported here.

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