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I am trying to install the new Windows 11 update from Windows Update, but I keep getting error 0xc1900101.
The installation starts, and after a couple restarts, it says:
" Attempting to recover installation "
" Undoing changes made to your computer "
And then I am greeted with error 0xc1900101 on Windows Update.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
I am also seeing this same issue, the install is only 2 months old, no 3rd party antivirus or cleaners installed....
feedback hub link:
also a related post I commented on:
https://answers.microsoft.com/en-us/insider/forum/all/not-able-to-update-to-windows-11/88255863-09b2-47c5-8371-78a81263a4ee https://answers.microsoft.com/en-us/insider/forum/all/0xc1900101-error-while-trying-to-update-to-win11/98987d63-0e78-4931-8f28-551ecc48e7dd
I set my Insider download settings to Beta and that stopped the attempted downloads
As I did not get a response from Microsoft on the 0xc900101 error, I gave up after fighting this problem for the better part of two days. I was hoping to do the upgrade to the development version of Win 11 from an existing, working, Win 10 machine with normal applications on it. As that effort failed after many tries and lots of experimentation, I took the advice of another poster to this forum. I wiped the NVMe drive clean (removed all partitions), and did an install with a fresh copy of Win 10 (21H1) on a USB 3.0 flash drive. I then immediately put the OS into the development channel, and installed Win 11 without a problem. Unfortunately, I will have to reload all the applications and configuration that the machine had acquired over the last year, but that was the price of being able to install Win 11 on that particular PC. It does seem to work fine, but I would have like to be able to do a straight upgrade from a working machine, as opposed to having to do a clean OS install, and then do the upgrade. Fortunately, I am well organized when it comes to keeping installation software and the license information, so I am able to restore the PC to normal operating condition. Win 11 seems to work well with bluetooth, various third party applications (browsers, performance test software, adobe acrobat reader, Microsoft remote access, Gdata Internet Security, Malwarebytes, Passmark Diskcheckup, and the latest AMD drivers for their 3200G processor and B450 chipset, Having worked in the IT/computer hardware/network protocol development/test engineer business for 50 years (yes I am really that old), I have gotten quite good at finding bugs.
Although that would certainly work, my expectation would be that it work without issue. I am not irritated by the regular prompting to install windows 11, I am irritated by it failing every time.
I am in the same camp as you. I can scrub my computer completely clean and start all over again. I am not inclined to do that because I expect Microsoft get their stuff together enough for it to work the way it should. I have been receiving windows 10 updates for many years without a single issue. Now that windows 11 is out in the preview mode that seems to have perplexed the Win11 developers.
