Make sure that the latest updates for Outlook are installed. For more information, see How to install the latest applicable updates for Microsoft Outlook (US English only). Many of these items can be automatically checked by the Classic Outlook Advanced Diagnostics troubleshooter.

Recovery Toolbox worked very well and relatively quickly. The original .ost file must be converted to a pst file using Recovery Toolbox for Outlook and then opened in Outlook. Conversion from OST to PST using Recovery Toolbox for Outlook doesn't require the availability of Exchange Server or Windows Domain Controller. The full version of Recovery Toolbox for Outlook transforms it from a data loss diagnostic tool into a complete data recovery solution.

Pressing Alt+Tab will help you switch from window to window and help you see what dialog boxes might be stopping Outlook from Fix Outlook official help responding. These troubleshooting techniques apply to Outlook 2016 and 2011 for Mac. The navigation pane, which typically displays your Inbox, Sent Items, and other folders on the left sidebar, can sometimes become corrupted. A simple reset often resolves this and allows Outlook to open correctly. Sometimes, extra tools, ‘add-ins’ in Outlook, can make things tricky. They’re like helpful accessories, but sometimes they can cause trouble.

The procedure is secure and doesn’t lead to any loss of data. But little tools that add extra features to Outlook can be the reasons for Outlook corruption. The recipient display properties are changed to be consistent with the recovered recipient table. As soon as this operation is complete, other algorithms are run to collect all the orphaned messages and to put them in an Orphans folder. To start the Inbox Repair tool manually, locate one of the folders by using Microsoft Windows Explorer, and then Fix Outlook official help double-click the Scanpst.exe file. As the process concludes, you can preview all repaired content across the platform.

These applications and services can interfere with Outlook. A Selective Startup or "clean boot" process can help you identify problems that are caused by application conflicts. Corrupted PST or OST data files can prevent Outlook from loading. Microsoft’s ScanPST tool can repair minor corruption