i am still having the problem. https://core.cloud.unity3d.com still has a certificate is not valid error. @mora260 have you done anything special?
Issue appears to be fixed. Caused by certificate for *.cloud.unity3d.com on https://core.cloud.unity3d.com expired at Friday, October 10, 2025 at 4:59:59 PM. The site now redirects to Unity Cloud . If you close Unity Hub and reopen it, you’ll be able to activate licenses again
If you look at your %APPDATA%\UnityHub\logs\info-log.json , you’ll see the certificate error message there, it’s a bit unreadable unless you prettify the json output and replace the \n with newlines
@Nielorann, if you didn’t get any Unity kisses today, I’d be happy to give you the first one.
mine is working too. good luck guys.
Mine didn’t work until now, only installing Unity Hub again worked for me.
Here is what worked for me:
Restart the Windows Management Instrumentation (WMI) Service
- Click the Windows Start menu, type Services, and hit Enter.
- Scroll down the list until you find Windows Management Instrumentation.
- Right-click it and select Restart. If it prompts you that it needs to restart other dependent services, click Yes.
- For good measure, find the service named IP Helper, right-click it, and select Restart as well.
- Close the Services window, launch Unity Hub, and try the activation