Not something you want to take on lightly, but sometimes you have to. Similar to our earlier suggestion of repairing Office (see #3 Repair Your Microsoft Office above), perform the same steps except choose to Uninstall. Be aware that you may need your product key if you received one. This option could be useful if you constantly have to wait for Outlook to rebuild its data file when you restart. No matter how well written add-ins are common Outlook startup issues (and even Outlook itself), there will always be the occasional Outlook problem that doesn’t seem to go away or may not be related to add-ins at all.

Once the PST file is repaired, you can import the repaired PST file into a new or existing Outlook profile to restore and access all mail items. In the Folder Pane, you might see a folder named Recovered Personal Folders that contains your default Outlook folders or a Lost and Found folder. Although the repair process might recreate some of the folders, they may be empty. The Lost and Found folder contains any folders and items recovered by the common Outlook startup issues repair tool that Outlook can't place in their original structure. Moreover, this tool can quickly recover email messages, calendars, tasks and other data from corrupted PST files. It also offers a filter option