When I log on my PC I go straight to Google search I can't type in the main address bar and I get a message saying request lookup key not found in any active activation context

What browser are you using?

Have a look at this thread, it seems to have some solutions;

https://www.askmehelpdesk.com/internet-web/request-lookup-key-not-found-any-active-activation-context-61188-2.html

First, please don't ask questions via PMs. Most of us do not respond that way.

Second, did you try any of the solutions offered in the thread Hunter linked to?