Start by opening the Office installation folder on your device and insert SCANPST.EXE by clicking on the browse button. Next, select your Outlook data file and press the Start button to initiate the data file scan. Hit the Repair button if an error pops up. The next step to fix Outlook not opening is to delete files from Microsoft exchange. Open Control Panel and select Mail option. Choose E-mail accounts from the Mail Window and click on the Data Files tab to set the exchange account. Locate the data files and delete them.

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