OK use these instructions to pinpoint which add-in is causing the problem and then disable it or reinstall it depending on your preference. Let me know if you get stuck.

• 1. Start Outlook in Safe Mode again if you closed it.
• 2. Click on File -> Options.
• 3. In the Options window, click the Add-ins heading on the left.
• 4. The right hand pane will change to reflect the add-in list.
• 5. Make sure that the Manage drop down is set to COM Add-ins and click Go.
• 6. A new window will appear. You now have a choice. You can clear all the checkboxes and restart Outlook. Then add each line back by checking the box, restarting Outlook until you find the one that makes Outlook lock up.
• 7. Your second choice is to uncheck one add-in at a time, restarting Outlook each time until it works correctly without using the Safe Mode switch.
• 8. Once you have located the malfunctioning add-in, you can either leave it disabled, remove it completely if it is something you do not use, or reinstall the associated application (e.g. antivirus).