If these files stop working for any reason, you can use the Office Inbox Repair Tool to scan and repair the files to get Outlook working again. Outlook 2016 uses two types of data files, including the Offline Outlook File (.ost) and the Outlook Data File (.pst), depending on the type of account you configured to store offline copies of your emails, contacts, calendars, and other items. If after repairing the installation, you're still experiencing problems, then it could be something wrong with the Outlook data files. Once you've completed the steps, the repair tool will do a clean reinstallation of Office, and after the process, you should be able to use the Outlook 2016 app normally without issues.

Online repair (recommended): Resolves any issues with Office, but it requires an internet connection to download the necessary files to repair your applications.

Quick repair: Resolves most issues using files already stored on your device to repair your version of Office.

(The name of the installation will be slightly different depending on the edition you have installed.) To repair the installation, close any running Office application, and do the following: Luckily, Office includes a repair utility to fix common problems with the suite of apps. Sometime Outlook may stop responding or experience problems because of installation issues. Quick Tip: If you don't see the Update Now option, you may need to click Enable Updates first.Īfter completing the steps, you can close the 'You're up to date!' dialog, or follow the on-screen directions to install new updates if available.

Click the Update Options button located on the right-side.

To check for Office updates, do the following:

To make sure that Windows 10 is up-to-date, do the following: If Outlook refuses to work, or it's always freezing, you may want to check that your device has the latest updates installed. How to install Windows 10 and Office updatesĪlthough Windows 10 and Office can receive and install updates automatically, sometimes they may have some missing patches that could cause apps (such as Outlook) not to work correctly. Once you've completed the steps, launch the app normally one more time, and Outlook should no longer get stuck with the 'Processing' message. Type the following command and press Enter to start Outlook in safe mode:

Use the Windows key + R keyboard shortcut to open the Run command.

If Outlook gets stuck loading with the 'Processing' message, close the app, and launch it in safe mode to try fixing this problem using the following steps: How to fix 'Processing' message while opening Outlook

How to install Windows 10 and Office updates.

How to fix 'Processing' message while opening Outlook.

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