Because Microsoft's Outlook 2007 program, which allows users to use and sync address books, calendars, schedules and email accounts, is so important to businesses and schools, not being able to open the program can cause serious problems. If you are experiencing difficulties opening Outlook 2007 on your computer, a few checks and troubleshooting steps can help you locate the issue and resolve it so you have access to all of your Outlook files once more.

Click "Start" in the bottom left corner of your desktop, then "Run." Type "outlook.exe/a" into the field and press "Enter."

Go to "Help" and select "Office Diagnostics," then "Run." Wait for the diagnostics and repair, then close and restart Outlook. If will not open, continue to the next step.

Click "Tools," then "Trust Center." Select "Add-ins," followed by "Add-in type" and hit "Go." Uncheck all items and click "OK." Restart Outlook and open the program.

• I Cannot Open Outlook 2007 [10/12/2010 03:00:01]