Windows Upgrade Help and more

Has anyone else had the upgrade from Windows 10 to 11 fail repeatedly? My system meets the requirements, but it always gets to about 35% and then rolls back with the generic "Something didn't go as planned" error (code 0xC1900101). I've run the Update Troubleshooter and it didn't help. Are there any recovery options or logs I can check to see what's specifically failing before I try a clean install?

From what I've seen, That error code often points to a driver conflict. First, check C:\$Windows.~BT\Sources\Panther\setupact.log for the failure details right before the rollback. Also, try temporarily disconnecting any non-essential peripherals and disabling your antivirus before the upgrade. If the logs are unclear, a clean install is usually the most reliable fix, but backup everything first.

Thanks! I checked that log file but it's huge and confusing. Is there a specific word or error I should be looking for in it?

Thanks! I found the log but it's huge and confusing. Is there a specific word or phrase I should look for in it?

Agreed, that log can be a beast. Try searching for "Error" or "Failed" first to narrow it down.

Yeah, Also, have you tried temporarily disabling your antivirus before starting the upgrade?

I had the same problem. For me, it was a conflict with an old driver for a printer I don't even use anymore.

+1 Yeah, that's a good point—have you tried checking for any outdated drivers in Device Manager, especially for things you don't use often?

Agreed. Also, have you made sure to temporarily disable any third-party antivirus software before starting the upgrade?

Yeah, that's a good call. Also, try disconnecting any non-essential USB devices, like printers or external drives, before you run the setup again.