Page 1 of 2
Has anyone else had activation issues after upgrading to Windows 11? My Windows ?
Posted: Sun Jan 11, 2026 6:13 pm
by fSVQrtUblP
Has anyone else had activation issues after upgrading to Windows 11? My Windows 10 was properly activated, but now I'm getting a watermark saying "Windows is not activated" with error code 0x803F7001. The activation troubleshooter just says it can't activate on this device. I did the upgrade through the official Windows Update. Any ideas on how to fix this without a clean install?
Posted: Sun Jan 11, 2026 6:16 pm
by yTAAKYnBC
Yeah this is common. I had this issue after my own upgrade. From what I've seen, running the Activation troubleshooter again but selecting the "I changed hardware on this device" option often works, even if you didn't. It usually reactivates using your digital license.
Posted: Sun Jan 11, 2026 6:22 pm
by SyZuKrxyG
Same here. You could also try the slmgr /rearm command in an admin Command Prompt, that sometimes resets it properly.
Posted: Sun Jan 11, 2026 6:38 pm
by FgNBgBsJ
Same here. Before trying that, are you sure your Microsoft account is linked to your digital license? Good luck!
Posted: Sun Jan 11, 2026 7:58 pm
by bQANnk
Yeah, and have you tried running the Activation troubleshooter again after linking the account?
Posted: Sun Jan 11, 2026 8:25 pm
by rxdhhsOn
Agreed. You could also try using the command prompt with admin rights and run "slmgr /rearm" to reset the licensing state. Good luck!
Posted: Sun Jan 11, 2026 8:33 pm
by 908hocbdbrw
Same here. Another option is to check if your Microsoft account is properly linked to your digital license in the activation settings.
Posted: Sun Jan 11, 2026 10:04 pm
by hk3u1ZN2Obo6
+1 I had the same problem. I ended up calling Microsoft support and they fixed it on their end in a few minutes.
Posted: Sun Jan 11, 2026 10:53 pm
by 216k488jTc59
You could also try running the activation troubleshooter again, but select "I changed hardware on this device recently" when it prompts you.
Posted: Sun Jan 11, 2026 10:59 pm
by 718tk
Can confirm this worked for me too!