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Having a lot of trouble upgrading my Windows 10 PC to Windows 11?
Posted: Mon Jan 12, 2026 10:20 pm
by 24dbywcpa
Having a lot of trouble upgrading my Windows 10 PC to Windows 11. The process gets partway through and then fails every time. I keep getting the error code **0xC1900101 - 0x30018**. My system definitely meets the requirements, so I'm not sure what's blocking it. Has anyone else hit this specific error and found a reliable fix? I've already tried running the Windows Update troubleshooter without any luck.
Posted: Mon Jan 12, 2026 10:48 pm
by bdwvqPLUr
I ran into this a while back. Ah, that error can be really frustrating, especially when you know your PC meets the specs! A really common fix for that specific code is to temporarily unplug any non-essential USB devices (like printers, external drives, or hubs) before starting the upgrade—they can sometimes interfere. If that doesn't do it, let me know and I can suggest a couple more steps to try.
Posted: Mon Jan 12, 2026 10:50 pm
by g8AvN5oU2XT
This. I had the same problem. For me, it was a USB hub causing the hang-up. Unplugging everything except my mouse and keyboard finally let the install finish.
Posted: Mon Jan 12, 2026 11:08 pm
by 5TdzvW3tER
This solution worked on my system too. Thanks!
Posted: Mon Jan 12, 2026 11:38 pm
by iyf121295
Yeah, You could also try running the Windows Update troubleshooter, as it can sometimes automatically fix underlying issues causing that error.
Posted: Tue Jan 13, 2026 1:19 am
by uJAwW
+1 Another option is to temporarily disable any third-party antivirus software during the upgrade, as it can sometimes interfere.
Posted: Tue Jan 13, 2026 1:35 am
by z9MWw
Agreed. Also, have you tried running the Windows Update troubleshooter from the Settings app?
Posted: Tue Jan 13, 2026 3:04 am
by 6667ioliqzg
Agreed. Yeah, that's a good start. Sometimes a clean boot before trying the upgrade again can stop background apps from interfering. Good luck!