When trying to start a Microsoft 365 app, you might get this error. Here are some things you can try to fix the problem. We’ve listed the most common solutions first, so try them in order.
Restart your device
Wait a few minutes, restart your device, sign back in, and restart your app.
Repair Office from the Control Panel
How you get to the repair tool depends on your operating system.
Repair options from the Settings page
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Select Start > Settings > Apps > Apps & features.
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Select the More icon next to the app you want to fix.
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Select the Advanced options link under the name of the app (some apps don't have this option). On the page that opens, select Repair if it's available. If it isn't available or doesn't fix the problem, select Reset.
Repair options from the Control Panel
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In the search box on the taskbar, type control panel and select Control Panel from the results.
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Select Programs > Programs and Features.
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Right-click the program you want to fix and select Repair, or if that’s not available, select Change. Then follow the directions on the screen.
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Right-click the Start button
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Select the Microsoft Office product you want to repair and select Modify. If you don't see any options, select the three dots on the right side.
Note: This will repair the entire Office suite even if it's just one application you want to repair such as Word or Excel. If you have a standalone app installed, then search for that application by name.
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Depending on if your copy of Office is Click-to-run or MSI-based install, you'll see the following options to proceed with the repair. Follow the steps for your installation type.
Click-to-run
In the window How would you like to repair your Office Programs, select Online Repair > Repair to make sure everything gets fixed. (The faster Quick Repair option is also available, but it only detects and then replaces corrupted files.)
MSI-based
In Change your installation, select Repair and then click Continue.
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Follow the instructions on the screen to complete the repair.
Uninstall and reinstall Office
Uninstall Office using easy fix
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Select the button below to download and install the Office uninstall support tool.
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Follow the steps below to download the uninstall support tool according to your browser.
Tip: The tool may take a few minutes to download and install. After completing the installation, the Uninstall Office products window will open.
Edge or Chrome
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In the lower-lower left or upper-right corner, right-click SetupProd_OffScrub.exe > Open.
Edge (older) or Internet Explorer
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At the bottom of the browser window, select Run to launch the SetupProd_OffScrub.exe.
Firefox
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In the pop-up window, select Save Fileand then from the upper-right browser window, select the downloads arrow > SetupProd_OffScrub.exe.
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Select the version you want to uninstall, and then select Next.
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Follow through the remaining screens and when prompted, restart your computer.
After you restart your computer, the uninstall tool automatically re-opens to complete the final step of the uninstall process. Follow the remaining prompts.
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Select the steps for the version of Office you want to install or reinstall. Close the uninstall tool.
Having trouble installing Office? Use the offline installer
To reinstall Microsoft 365 see Install or reinstall Office on a PC.
The Microsoft 365 offline installer may help bypass potential proxy, firewall, antivirus, or Internet connection issues that might occur during an Microsoft 365 installation.
For steps to install an offline version of Microsoft 365, see Use the Office offline installer and select the correct tab for your version of Office.
