I recently solved this problem :) simple as this if you try and search a URL on the address bar of your internet explorer and it comes up as this

'the requested look up key was not found in any activation content,

Follow the simple instructions below to solve this problem

1. right click on internet explorer icon on your desktop

2. click on properties

3. then click on advanced

4. then go down to were it says show friendly URL's and tick the box

Easy as that

Uninstall and reinstall IE.