I recently purchased a two year subscribtion in order to sync between my work and private PC (both Win10). I have typed in my voucher on my work PC, and when I try to sync to my private PC, I get this error (in Danish though): "Validation failed could not connect to server. Check internet connection and try again." I have tried several of the suggested solutions in the community, including whitelisting https://avain.f-secure.com, allowing KEY to pass the firewall, disabling all anti-virus softwares (my work PC does not run F-Secure SAFE as my private), re-installing KEY on both PCs, but nothing seems to work. I curretnly run version 4.3.134 of KEY on both PCs and both PCs are updated to the lates version of Win10 (14393.82 on private and 10586.545 on work PC). Anyone with a good solution?
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