License activation depends heavily on digital signatures.
Validity of digital signatures depends on trust. On some computers trusted root certificates are missing, specially on older PC’s or when auto-updates are turned off.
If you are facing problems because of this, it is essential that you install trusted root certificates.
Please download this .zip file and extract it: Certificate files
Archive includes certificate files that you would need to install on your computer.
Please perform steps below for all included certificates:
1. Double click on the certificate and click “Install Certificate”:
2. Select “Current User” and click “Next” button:
3. Select “Place all certificates in the following store” option and click “Browse”:
Make sure that “Trusted root certification Authorities” folder is selected and click “OK”:
4. Click “Finish” to import certificate:
System should confirm that importation was successful: