Microsoft Office Error Code 0x426-0x0: How to Fix It

Easy 10-20 minutes Medium Severity Verified June 2026
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Error Code
0x426-0x0
Brand
Microsoft Office
Product Type
operating_system
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
10-20 minutes
Microsoft Office error code 0x426-0x0 occurs when the Click-to-Run service has stopped running or failed to start properly. This service is essential for Office applications to function correctly, and when it's not running, you'll experience problems launching or using Office programs like Word, Excel, or PowerPoint.
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Tools You'll Need

How to Fix Error Code 0x426-0x0

  1. Close all Office applications

    Save any unsaved work before closing Office applications to prevent data loss

  2. Open Windows Services

  3. Locate Click-to-Run service

  4. Start the Click-to-Run service

  5. Set service to automatic startup

  6. Restart your computer

  7. Test Office applications

  8. Run Office Quick Repair if needed

    Quick Repair requires an internet connection to download necessary files
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When to Call a Professional

Contact Microsoft support if the Click-to-Run service fails to start after multiple attempts, if you receive access denied errors when trying to modify services, or if Office applications continue to malfunction after completing all troubleshooting steps. Professional help may also be needed if your Office installation is corrupted and requires advanced repair or reinstallation.

Frequently Asked Questions

What is Microsoft Office Click-to-Run service?
Click-to-Run is a Microsoft streaming and virtualization technology that reduces the time required to install Office programs. It allows you to run Office applications while they're still downloading and installing in the background.
Why does the Click-to-Run service stop running?
The service may stop due to Windows updates, system crashes, conflicting software, corrupted Office files, or changes to service settings. Sometimes antivirus software or system optimization tools can also interfere with the service.
Will I lose my Office documents if I fix this error?
No, fixing the Click-to-Run service error will not affect your saved Office documents. This error only impacts the ability to run Office applications, not your data files. However, always save any open work before troubleshooting.
Can I prevent this error from happening again?
Yes, ensure the Click-to-Run service startup type is set to 'Automatic', keep Windows and Office updated, avoid using aggressive system optimization tools that might disable services, and exclude Office folders from antivirus real-time scanning if necessary.
What if I can't find the Click-to-Run service in Services?
If the service doesn't appear, your Office installation may be corrupted or you might have a standalone MSI version of Office instead of Click-to-Run. Try running Office repair from Control Panel or contact Microsoft support for assistance with your specific Office version.

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