Follow the steps for your installation type. Repair broken Office app installations.

Outlook Support and Recovery Assistant diagnostics have been migrated to Windows Get Help. Use Outlook troubleshooters in Windows Get Help application. To invoke the classic Outlook diagnostics in the Get Help app directly go to Classic Outlook troubleshooters.

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Starting a Microsoft Office for Windows application in Office Safe Mode can allow you to safely use it when it has encountered certain problems.

To help you resolve this, try the solutions below. We've listed the most common solutions first so try the steps in the order they're listed. Make sure Office is updated to Version 2102 (Build 13801.20808) or later. If you're not setup for automatic updates do the following:

Learn how to uninstall Office from a PC using the Control Panel or with the uninstall support tool.

To get the standalone package for this update, go to the Microsoft Update Catalog website. You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

In your downloads folder, double-click the Office Deployment Tool exe file to install it. If you see the User Account Control prompt that says, Do you want to allow this app to make changes to your device?, click Yes.

After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, but we recommend moving to Windows 11. Learn more. Note: Use these steps for Windows programs.

If you're looking for the steps to download and install the latest version of Office such as Microsoft 365, Office 2021, Office 2019, or Office 2016, see Install Office on your PC or Mac. How do I reinstall Office? If you're reinstalling Office on a different computer than the one where you originally installed Office, note the following: