Issue with all web certificates being unsecured and not able to install parallels tools

DominicJ

Bit poster
When I try to install parallels tools I get this:
"parallels a file that is required cannot be installed because the cabinet file "file name" has an invalid digital signature. This may indicate that the cabinet file is corrupted.

All websites with a login give me an insecure error and most sites I can't even log into. So something is wrong with the installation but it was fine up until recently so I have no idea what is going on. So I have internet access but it seems to be completely insecure causing windows and antivirus software to give warnings like crazy.

I tried to solve this by buying the latest parallels and that did not work. Antivirus was only installed recently to see if maybe I had a virus or something (so its not the problem since issue has been there before this).

Thoughts? I have to do some work and I can't right now. really really really need this fixed.
 
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