Outlook has detected that you are holding down the ctrl key, do you want to start Outlook in safe mode?
If you have not had any problems click no.
If there have been problems then click yes.
When Outlook has opened, click Help -> About -> Disabled Items
Enable each item in turn and it will fail on the item causing the problem.
You may need to repair Microsoft Office by clicking Help -> Detect and Repair
When running this option you may require your Office Disk to be inserted into your disk drive when asked.