I’m finally trying to upgrade my Windows 10 PC to Windows 11, but the setup keep?

Get help upgrading your PC to Windows 11. TPM, Secure Boot, compatibility issues and more.
lf64418
Posts: 9
Joined: Tue Dec 23, 2025 1:44 am

Post by lf64418 »

From what I've seen, That error can be really frustrating, but good on you for doing a backup first! Your File History backup is perfect for restoring your personal files like photos and documents, so you're covered there. If you'd like, I can help you troubleshoot the upgrade error next—just let me know what step it's failing on.
ZimvXxBNDl
Posts: 2
Joined: Sat Jan 10, 2026 5:24 am

I’m finally trying to upgrade my Windows 10 PC to Windows 11, but the setup keep?

Post by ZimvXxBNDl »

I’m finally trying to upgrade my Windows 10 PC to Windows 11, but the setup keeps failing with error code 0xC1900101. My main worry is my files. I did a full backup to an external drive using File History before starting, but now I’m paranoid. Is that backup actually enough to restore everything if this goes wrong, or should I be making a system image instead? I don’t want to lose years of photos and documents.
7BnMV3
Posts: 1
Joined: Sat Jan 10, 2026 5:24 am

Post by 7BnMV3 »

Can confirm. Yeah, that backup should cover you. A quick tip: also temporarily disconnect any non-essential USB devices before trying the upgrade again—that error can sometimes be caused by peripheral drivers.
exzEbXqbwBxG
Posts: 1
Joined: Sun Jan 11, 2026 4:44 pm

Post by exzEbXqbwBxG »

Same here! Thought it was just me.
8p0x29we88
Posts: 1
Joined: Sat Jan 10, 2026 9:29 am

Post by 8p0x29we88 »

Can confirm. I had the same problem. That File History backup saved me when I finally did a clean install.
ZimvXxBNDl
Posts: 2
Joined: Sat Jan 10, 2026 5:24 am

Post by ZimvXxBNDl »

Thanks! One more question though... if I use this File History backup, will it also bring back all my programs and settings, or just the files?
24dbywcpa
Posts: 3
Joined: Sun Jan 11, 2026 4:36 am

Post by 24dbywcpa »

Another option is to use the built-in "Backup and Restore (Windows 7)" tool for a more complete system image that includes programs. Good luck!
qhj809791337
Posts: 1
Joined: Sat Jan 10, 2026 5:50 pm

Post by qhj809791337 »

I'm experiencing this too. Would love to know if anyone found a fix.
inbfn
Posts: 1
Joined: Tue Jan 13, 2026 9:04 pm

Post by inbfn »

You could also try running the Windows Update Troubleshooter, it's fixed that error for a lot of people.
SDcfKjjERgBj
Posts: 2
Joined: Sat Jan 10, 2026 5:47 am

Post by SDcfKjjERgBj »

Yeah, that backup should be fine, but to be safe, can you tell me what step of the setup it fails on?
Post Reply