Troubleshooting Error Code 0x426-0x0 in Microsoft 365 (Office) Apps on Windows 11 and 10

If you find yourself facing the frustrating error code 0x426-0x0 while trying to launch Microsoft 365 (Office) applications like Word, Excel, or PowerPoint on Windows 10 or Windows 11, you’re not alone. This guide will walk you through the steps necessary to resolve this problem using the built-in repair tools available with Microsoft 365.

This error typically signifies an issue with the installation files or configurations of your Office applications. Although you could uninstall and reinstall the apps to fix this, utilizing the repair options is usually quicker and more efficient.

Step-by-Step Guide: Fixing Error Code 0x426-0x0 in Microsoft 365 Apps

To efficiently tackle the 0x426-0x0 error, follow these straightforward steps:

Launch the Settings app by pressing Win + I on your keyboard.
Select Apps from the available options.
Navigate to the Installed apps section to view your applications.
Locate the Microsoft 365 app that is causing the issue. Click on the menu (three dots) next to the app and select Modify.
Once the modification window opens, opt for the Online Repair option. This mode is comprehensive and can fix most issues effectively.
Tap the Repair button to initiate the repair process.

After executing these steps, the repair tool will address common issues hindering the operation of your Microsoft 365 apps, and you should be able to open them without encountering the error code 0x426-0x0 anymore.

For users experiencing issues on Windows 10, the navigation path is slightly different: go to Settings > Apps > Apps & features to find the repair options.

For further assistance and detailed troubleshooting steps, you can refer to the

Frequently Asked Questions

1. What causes the error code 0x426-0x0 in Microsoft 365 apps?

This error can stem from various issues, including corrupted installation files, conflicts with other software, or incomplete updates. It’s important to use the built-in repair options to solve these problems efficiently.

2. Can I fix the error code 0x426-0x0 without uninstalling Microsoft 365?

Yes, using the Online Repair option is often sufficient to resolve the error without needing to uninstall the applications. It’s recommended to attempt a repair first before considering a full reinstallation.

3. Will repairing Microsoft 365 affect my saved documents?

No, performing a repair will not affect your saved documents. Any changes will only apply to the installation and functioning of the applications themselves.

Microsoft Support page