Invalid license key

[Supreme Leader]

.....aand if you're still having issues, go here https://www.clashfarmer.com/forum/showth...p?tid=4077 and download the ones for ClashFarmer and TempC. I have had this issue sometimes because of temporary files not updating correctly. Did this happen after your computer lost power or Windows was terminated without a proper shut down? That has caused the issue for me a few times.

Firewall and some anti viruses can cause that as well
Adding clashfarmer.exe to exclusions might help fix this issue if what orkalass said doesnt