Windows Upgrade Help and more

That error can be super frustrating, especially when your PC should be good to go. A common fix for that specific code is to temporarily disconnect any non-essential USB devices (like printers, external drives, or extra monitors) and then run the upgrade again. If that doesn't do it, just let me know and we can try a couple other steps together.

Having a lot of trouble upgrading my Windows 10 PC to Windows 11. The upgrade assistant gets partway through and then fails every time. The last attempt gave me the error code **0xC1900101 - 0x30018**. I’ve already run the Windows Update troubleshooter and made sure my drivers are updated, but no luck. Has anyone found a reliable fix for this specific error? My system meets all the requirements, so it’s pretty frustrating.

Same here. Yeah, that error's a real headache. A quick tip: try temporarily disconnecting any non-essential USB devices before starting the upgrade again—sometimes a peripheral can interfere.

Yeah, and if you're still stuck, temporarily disabling any third-party antivirus during the upgrade can sometimes clear the path. Good luck!

Agreed, that's a solid fix. Also, double-check you have a good chunk of free space on your C: drive, as that can silently cause these failures too.

You could also try temporarily disabling your antivirus and any non-essential startup programs before running the upgrade again.

Can confirm. You could also try temporarily disabling any third-party antivirus software during the upgrade, as that can sometimes interfere. Good luck!

Can confirm. Yeah, that's a solid suggestion. Also, double-check you have at least 64GB of free space on your system drive, as that can silently cause these failures.

Have you checked if your PC actually meets all the Windows 11 requirements, like TPM 2.0 and Secure Boot?

Add me to the list - same error message.