[German]Update KB5003169 dated May 11, 2021 for Windows 10 version 1909 has caused issues, because logging into Microsoft 365 desktop client apps such as Microsoft Teams, OneDrive for Business, and Microsoft Outlook may fail. You may see error message 80080300 or "We ran into a problem. Reconnecting…" when authenticating or logging into Teams.
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In the KB article for the update, Microsoft recommends restarting or using the web apps for the Office module in question. I've reported about that incidence within the blog post Windows 10 V1909: Update KB5003169 blocks Teams/Outlook/OneDrive login.
Now Microsoft has added a new entry Microsoft 365 apps might be unable to sign in to Windows 10 status page, which reports, that the issue has been resolved:
After installing KB5003169 and restarting your device, you might be unable to sign into some Microsoft 365 desktop client apps such as Microsoft Teams, OneDrive for Business and Microsoft Outlook. You might also receive an 80080300 error or "We ran into a problem. Reconnecting…" when attempting to authenticate or sign into Teams.
Note Mobile, web and non-Windows versions are not impacted.
Workaround: To mitigate this issue on most devices, you can restart your device a second time. Most devices will sign into affected apps as expected for all subsequent restarts after the first restart that completes installation of the update. If restarting does not mitigate the issue on your device, you can use the web versions of the apps:
- Microsoft Teams
- OneDrive for Business
- Outlook
This bug affected Windows 10, version 1909. The fix for this bug has been delivered with update KB5003635 from June 8, 2021.This update will be automatically installed via Windows Update, Windows Update for Business, or Windows Server Update Services (WSUS). And it's available within the Microsoft Update Catalog. (via)
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