Step 1: Click 'Start' and put 'Command' into the search box.
Step 2: Click 'Enter' while holding down the CTRL + SHIFT key.
Step 3: In the dialogue box, select 'Yes.'
Step 4: A black window will appear with a flickering cursor.
Step 5: Press 'Enter' after typing'sfc /scannow.'
Step 6: Run 'System File Checker to check for faults and try to correct them.
Step 7: Open Microsoft Outlook and restart it.
