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

[iDz8VogxOb]

So basically, A system image backup is a solid safety net, but for extra peace of mind, I'd definitely manually copy that Documents folder to a separate location on your external drive as well. That way your most important files are in two places if the upgrade goes sideways.

[iixgM]

This. Yeah, that backup is a solid start. I'd also run the Windows Update troubleshooter first, as that error is often tied to a driver conflict.

[pNosvM]

I’m 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 created a system image backup to an external drive, but is that enough? Should I also manually copy my Documents folder? I don’t want to lose years of photos and work files if something goes wrong during the rollback.

[2874aotobh]

I had the same problem. That error is a real headache, but your system image is a solid backup—I’d still manually copy your Documents folder for extra peace of mind.

[mqk0855]

This. You could also try running the Windows Update troubleshooter first, as that specific error can sometimes be a driver conflict.

[pNosvM]

Thanks! I ran the troubleshooter, but now my computer says it doesn't have enough free space to upgrade.

[g8AvN5oU2XT]

Yeah, that's a common one. Try clearing out your Downloads folder and emptying the Recycle Bin first, that often frees up enough space.

[gUsyDTO9]

Agreed. I had the same problem. That error is often a driver conflict, so I had to update my graphics driver before it would finally go through.

[4677ff]

Can confirm. Yeah, that driver tip is spot on. One extra thing: double-check your system image actually completed without errors before you try again.

[3dx43]

Yeah, Agreed, and it's also worth temporarily disabling any third-party antivirus software during the upgrade, as that can sometimes interfere.