So saw this on another WindowsCentral thread.

Click on the search icon, search on cmd when you find the application (Command Prompt) run as administrator (i.e. right click it and click run as administrator). You will then see a rectangular black window appear with folder> then type in sfc/scannow and sit back and wait (takes a while to run).

When finished type in exit. Then close outlook, restart and problem solve. Seems to have solved the problem for a number of people on the other thread too.