Windows 10: Update KB5063060 0x800f0900 fails and Windows 11, version 24H2 0xc1900101 fails

I haven't been able to run Update KB5063060 successfully. "Failed to install on ‎6/‎25/‎2025 - 0x800f0900"Troubleshooting indicated that I could run Windows 11, version 24H2 restore but that also fails and rolls back. "Failed to install on ‎6/‎25/‎2025 - 0xc1900101"System Info:ASUSTeK COMPUTER INC. Pro WS Z890-ACE SEBIOSVersion1501Date2025/02/07MotherboardModelPro WS Z890-ACE SEVersionRev 1.xxOperating systemEditionMicrosoft Windows 11 ProVersion10.0.26100Setuperr.log:2025-04-06 18:37:15, Error MOUPG CUnattendManager::Initialize90: Result = 0x80070490[gle=0x00000002]202

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Windows update fails with Error 0x800f0900

Unable to install both latest cumulative updates.

The installation of 2019-04 Cumulative Update for Windows 10 Version 1803 for x64-based Systems (KB4493437) failed yesterday with Error 0x800f0900 and today the installation of 2019-05 Cumulative Update for Windows 10 Version 1803 for x64-based Systems (KB4499167)
failed too with same Error 0x800f0900.

I ran the Troubleshoot app on Windows Update. It fixed Service registration missing or corrupt. However, running Windows update still failed with same Error 0x800f0900.

Restarted the computer several times and search the internet for fixes without success.

Please help. Thanks, Blaise

 

Windows Updates failed to instal

I just did step one and they have just all installed.... thank you so much.... it was quite frustrating having that update window pop up every 5 minutes and failing to instal every time

Thanks mate

 

Install errors - 0x800f0900

Cindy, I have tried the troubleshooting steps listed by David M. here as this person had a similar issue to me. Windows 11 Update (KB5012592) fails With Error Code 0x800f0900 - Microsoft Community I have tried all of them, I did find corrupted files and I ran windows update troubleshooter. All with no luck.