How to Fix Microsoft Office Error Code 0x426-0x0 in Windows 11/10

When using the Microsoft Office Programs ( Word, PowerPoint, Excel, etc..) you may at times come up with an error message 0x426-0x0. The error message usually tells that something went wrong with the installation process of the files and processes involved with Microsoft suite applications. As a result, when this error 0x426-0x0 occurs, the MS Office suite will not open. The complete error message reads as follows,

Something went wrong We could’nt start your program.Please try starting it again. If it won’t start, try repairing Office from ‘Programs and Features’ in the Control Panel. Error Code : 0x426-0x0

Click-to-run service that is disabled or a Corrupt Microsoft Office installation may cause this error. Sometimes the interference of a third-party utility or the already installed old office may cause the conflict. If you also face this issue and get the error while opening the Office applications, do not worry as this can be easily resolved. This article takes you through some tested fixes that help in getting rid of the error 0x426-0x0.


Fix 1: Repair Microsoft Office suite

Step 1: Press Win+ R to open the Run window.

Step 2: Type appwiz.cpl, and hit Enter.


Cmd Appwiz Min


Step 3: The Programs and Features window opens, scroll down to select Microsoft 365 ( Other Office Suites), and click on Change.


Msoffice Change Min


Step 4: A Microsoft Pop-up window opens, click on Quick Repair > Repair.

Step 5: You will get a pop-up message asking for Repair Confirmation, Click Yes.


Quick Repair Min



Step 6: Follow the instructions that appear on the screen and repair the MS Office.

Step 7: Restart MS Office and see if the error is resolved. If not, choose Online Repair (instead of Quick Repair as in Step 4) to repair the Office apps.

Step 8: Reboot your system and open any MS Office applications to see if the error is resolved. If not move down to the next fix.


Start Power Menu Restart


Fix 2: Set Microsoft click-to-run service to automatic

Step 1: Press Win+R to open the run window.

Step 2: Type services.msc, and hit Enter.


Run Servicesmsc Min


Step 3: Scroll down to select Microsoft Office click-to-run.

Step 4: Right-click on it to select Properties.


Offic Properties Min


Step 5: In the general tab, under Startup type, select Automatic and click Apply.


Click To Run Min


Step 6: Open any Microsoft Office Program to check if the error is resolved.


Fix 3: Turn off Windows Defender Firewall

Step 1: Open the Run window by pressing Win+ R simultaneously.

Step 2: Type control firewall.cpl, and hit Enter.


Run Control Firewall Min


Step 3: In the left-hand side menu, click the Turn Windows Defender Firewall on or off option.


Control Panel Turn Firewall On Off Min


Step 4: Select the radio buttons near Turn off Windows Defender Firewall and click OK as shown


Firewall 1


Step 5: Restart the system and open any MS Office application to check if the error is resolved. If not move to the next step.


Fix 4: Disable third-party antivirus temporarily

If you are using any third-party antivirus, then use this fix and see if the error is resolved. Here, I am using Norton Security. To do so,

Step 1: Click on Show hidden icons present on the right side bottom of the screen.

Step 2: Right-click on the antivirus icon to select Disable Auto-Protect.


Norton Min


Step 3: In the appearing window, select the time for which you want to disable the auto protection, Click OK.


Norton Time Min



Step 4: Now, you can launch any MS Office application and see if the error is resolved.


Fix 5: Ending all the Office related processes

If they are any MS Office applications or processes silently running in the background while using your system, they may stop you from opening any new office applications. So, you need to end all the office-related processes to fix the error 0x426-0x0. To do so,

Step 1: Open the Run window by holding the Win+R keys.

Step 2: Type taskmgr.exe and hit Enter.


Run Taskmanager Min


Step 3: In the Processes tab, Scroll down to select Microsoft Click-to-run(SxS).

Step 4: Right-click on it and click on End Task.


End Task Ms Office Min



Step 5: Now, open any MS Office application and see if the error is resolved.


Fix 6: Reinstall Microsoft Office

Step 1: Type Apps & Features in the search box and hit Enter.


Open Apps & Features Win11


Step 2: Scroll down to select Microsoft 365 or any other MS Office ( 2021,2019, etc..).

Step 3: Click on 3-dots and click on Uninstall.


Msoffice Uninstall Min


Now, even after uninstalling the Office Suite, there may be some shortcuts, folders, directories remaining and you need to remove them manually. To do this, follow the next steps:

Step 4: In the Start search tab, type %Programfiles% (64-bit processor) and hit Enter.

NOTE – If you use a 32-bit processor type %Programfiles(x86)%.


Programfiles Min


Step 5: Select all the remaining office folders and delete them.


Subfolders Delete Min


Step 6: Next, open the registry editor by typing regedit in the Run window.

Step 7: UAC will ask for permission, click on Yes.


1 Run Regedit Optimized


Step 8: Type the given sub-folder address.



Office Registry Min


Step 9: Now, right-click on each of them and click on Delete. In a similar way, delete all the folders present under Office Registry.


Subfolders1 Min


Step 10: Finally, Download Microsoft 365 or Other office suites and reinstall it.

Additional Tip – There is also an Office Uninstall Support tool you can use to uninstall the MS Office suite. If you wish to use it, you can download it from here.

That’s all.

Hope this article is informative.

Please comment and let us know which fix helped you resolve the issue.

Thank You.