how to fix error code 0x426-0x0

Question

When I try to open an Office app, like Word, I receive this message. I have to repair Office 365 and restarted the computer. I can not get it to go away and open my files on my Windows 11 PC

Answer 1

Hello, LeeHudson2

Welcome to Microsoft Community.   

I realize that you have encountered a problem with opening Office applications on your Windows 11 computer and got error code 0x426-0x0. I understand how you feel. 

Here are some steps you can try: 

1 -> I know you have already repaired Office, and I appreciate the efforts you have made for this. 

When fixing, there are usually two options: "Quick Repair" and "Online Repair". 

I would like to know which option you have tried? 

If you haven't tried the "Online Repair", you can give it a try. This option provides a more thorough repair.

2 ->Turn Microsoft Defender Firewall on or off - Microsoft Support

Disclaimer: Temporarily turn off real-time Microsoft Defender antivirus protection in Windows Security. However, keep in mind that if you do so, your device may be vulnerable to threats. So please turn it on immediately once issue fixed.

3 -> If a third-party antivirus software, or encryption software is enabled, please disable them and try again. They may incorrectly prevent Office from starting.

Disclaimer: Temporarily turn off antivirus protection. However, keep in mind that if you do so, your device may be vulnerable to threats. So please turn it on immediately once issue fixed.

4 - Check Office services.

It is possible that the services on which Office relies are not running properly, causing Office to fail to start.

• Press Windows + R to open the Run box.
• In Run box, type the following content and press Enter.

    services.msc
  

  
• In the services list, find "Microsoft Office Click-to-Run Service“.
• Right-click it and select "Properties".
• Make sure that the "Startup type" is "Automatic". Click OK.
• Restart computer and see the effect.

5 -> I would like to know if you have recently installed or enabled any other programs? If so, please uninstall them.

Other users have mentioned that SandBox and VMware can cause this issue.

For more information, you can refer to this post (Notice that it is in Chinese*):*

无法启动Office（0x426-0x0），无法卸载 - Microsoft Community

Feel free to post back if you need further assistance. Let's take it step by step. 

Best wishes, 

Lucia Wu - MSFT | Microsoft Community Support Specialist

Answer 2

The quick repair worked for Word but then I tried Excel and got same error code. Will try to repair again.