Having a lot of trouble upgrading my Windows 10 PC to Windows 11?

Description of your first forum.
IeTMazZFzUo
Posts: 1
Joined: Sat Jan 10, 2026 5:45 am

Post by IeTMazZFzUo »

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.
jgjtV88eq
Posts: 2
Joined: Sat Jan 10, 2026 5:47 am

Having a lot of trouble upgrading my Windows 10 PC to Windows 11?

Post by jgjtV88eq »

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.
530slqeon
Posts: 3
Joined: Mon Jan 05, 2026 3:56 am

Post by 530slqeon »

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.
hv8070
Posts: 2
Joined: Sat Jan 10, 2026 11:48 am

Post by hv8070 »

Yeah, and if you're still stuck, temporarily disabling any third-party antivirus during the upgrade can sometimes clear the path. Good luck!
0o1xx289
Posts: 2
Joined: Sat Dec 27, 2025 12:20 pm

Post by 0o1xx289 »

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.
2335tfcjyabb
Posts: 6
Joined: Sat Dec 27, 2025 10:28 pm

Post by 2335tfcjyabb »

You could also try temporarily disabling your antivirus and any non-essential startup programs before running the upgrade again.
yvXilgfPIEGW
Posts: 1
Joined: Sat Jan 10, 2026 5:46 am

Post by yvXilgfPIEGW »

Can confirm. You could also try temporarily disabling any third-party antivirus software during the upgrade, as that can sometimes interfere. Good luck!
sg7085
Posts: 4
Joined: Sun Dec 28, 2025 5:36 pm

Post by sg7085 »

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.
hkWo7D3WzD4
Posts: 4
Joined: Wed Dec 31, 2025 8:02 pm

Post by hkWo7D3WzD4 »

Have you checked if your PC actually meets all the Windows 11 requirements, like TPM 2.0 and Secure Boot?
zqz10
Posts: 1
Joined: Sat Jan 10, 2026 5:43 am

Post by zqz10 »

Add me to the list - same error message.
Post Reply