Windows Upgrade Help and more

Having a lot of trouble upgrading my Windows 10 PC to Windows 11. The process gets most of the way through, then fails and rolls back. I keep getting the error code **0xC1900101 - 0x40017**. My PC meets all the requirements, and I’ve run the update troubleshooter with no luck. Has anyone found a solid fix for this specific error? It’s getting pretty frustrating after the fourth attempt.

I ran into this a while back. Ah, that specific error can be a real headache, especially when you know your PC is compatible. A common fix for that code is to temporarily disconnect any non-essential USB devices (like printers, external drives, or hubs) before starting the upgrade again—sometimes they interfere.

If that doesn't do it, let us know and we can suggest a few more steps to try. Don't worry, we'll get this sorted. Let me know if that works.

Yeah, like USB drives, printers, or external drives—anything plugged in besides your mouse and keyboard.

Exactly what I needed, thank you!

Same here. Agreed, that fix worked for me too. One extra tip: if it happens again, try temporarily disabling any third-party antivirus before starting the upgrade.

Yeah, Also, double-check if your BIOS has any pending updates, as that can sometimes block the install.

Same here! Thought it was just me.

Agreed. You could also try temporarily disabling any third-party antivirus software and disconnecting non-essential USB devices before starting the upgrade again. Let me know if that works.

Yeah, You could also check for any pending driver updates, especially for your storage controller, and install those first. Another option is to manually create Windows 11 installation media and try an upgrade from that instead. Hope that helps.

clean install from that, but that's a bigger step—have you tried temporarily disabling your antivirus during the upgrade?