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Last Updated: February 3, 2022


After the release of the new WebView based Room Finder, you may receive the following error: Server Error: 401 – Unauthorized: Access is denied due to invalid credentials.


Important: This fix does not apply to Outlook for Microsoft 365 GCC High. This issue has been fixed in all other tenants. 

This issue has been fixed in Current Channel Version 2109 (Build 14430.20306) and in Semi-Annual Enterprise Channel Version 2108 (Build 14326.20692).

To find the most current build number for each update channel, refer to Office Update History

To install the update, follow the instructions here: Install Office updates

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Fixes or workarounds for recent issues in Outlook for Windows

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