14 DAY TRIAL // Microsoft has recently confirmed that the last update shipped for Windows 10 version 1909 could break down Microsoft 365 apps on some devices.
Windows 10 version 1909 has already reached the end of support, and the May 2021 Patch Tuesday was the last one for this particular operating system version.
The May 2021 cumulative update is KB5003169, and it obviously comes with a series of security improvements aimed at both the operating system and the pre-loaded components.
Microsoft has now confirmed that KB5003169 could cause problems with Microsoft 365 apps, explaining that an investigation is already under way and a full fix should be provided in an upcoming release.
“After installing this update 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,” Microsoft explains.
Full fix currently in the works
The company says that only Windows versions of the Microsoft 365 apps are affected by the glitch, so if you run them on mobile, web, or other non-Windows operating system, everything is supposed to be working properly.
Microsoft explains that the workaround is as simple as it could be, as it only comes down to a system reboot to bring this back to normal.
“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 says.
No ETA has been provided as to when the full fix could land for everybody.