side by side configuration error / Can't connect to internet

Hoping someone can help me, I'm having trouble connecting to the internet.........which i suspect Norton has blocked access.

 

When I try to open NIS i get the following error message -

 

"C:\program files\Norton Internet Security\Engine\17.5.0.127uistub.exe

 

The application has failed to start because its side by side configuration is incorrect.Please see the application event log for more details"

 

Now i know someone will reply with "did you check the event log?" .......and the answer in short is yes...i think?  

 

I'm not massively au fait with computers - I get by very happily using them for what i want and thats my lot, technical PC stuff or understanding it isnt my forte unfortunatley.

 

From what i can find with my limited ability in the event logs is "the activation context generation failed for C:\program files\Norton Internet Security\Engine\17.5.0.127\ccVrTrst.dll"

 

Hoping someone can help identify / help solve my problem, my laptop was working perfectly one night, and then the next morning wouldnt connect to the internet and I was unable to open/start norton due to the afore mention errors.

 

Thanks in advance