Fixing Microsoft error code 0x426-0x0

  • Microsoft Office error code 0x426-0x0 can occur when trying to install or open an Office application.
  • This error usually indicates that something went wrong with the files and processes associated with the installation or upgrade process.
  • The problem may be related to a specific program, but in some cases, it indicates that the entire Office package is wrong.
  • The Microsoft Office Auto Repair feature might work and solve your problem.

Updated February 2024This tool will stop these errors and fix common problems: Get it at this link
  1. Download and install the software.
  2. It will scan your computer to find problems.
  3. The tool will then correct the issues that were discovered.

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You might find that finding a replacement is not worth the stress when you weigh the benefits and drawbacks. Sometimes, fixing a bug is more important than finding a replacement.

By using Click-to-Run, you can run multiple versions of Office on the same computer by reducing the time and effort necessary to install Office and by using virtualization and streaming technology. In order to access any office apps, you must activate the Click-to-Run service. If you encounter any problems with Microsoft Office 365, make sure the Click-to-Run service is up and running.

The reason you are seeing this error code is because you are attempting to install or open an Office application that has error code 0x426-0x0.

In order to resolve the error code 0x426-0x0, try disabling third-party antivirus software or Windows Defender Firewall. A strict antivirus program or firewall can sometimes prevent an Office application from communicating with Windows servers, which results in your applications not being used, installed, or updated. 

This error usually indicates that something went wrong with the files and processes associated with the installation or upgrade process. It usually appears when you try to launch an Office program. The problem may be related to a specific program, but in some cases, it indicates that something is wrong with the entire Office package.

What is the cause of Microsoft error code 0x426-0x0?

What is the cause of Microsoft error code 0x426-0x0?

According to our research, Microsoft Office error code 0x426-0x0 can be caused by several factors. Below are some potential causes:

Click-to-Run service-disabled: One of the most common causes of this error code is a scenario where the main Microsoft Office Click-to-Run service is disabled in the Services screen. In this case, you can solve the problem by enabling the service and setting the status to “Automatic” on the “Services” screen.

Damaged Office installation: According to some affected users, this problem can also occur due to a corrupt Office installation. This can either be due to a corrupted file or a root in a registry entry. In this case, you will be able to fix the problem by using the Microsoft Office Auto Repair feature.

AVG TuneUp interferes: It turns out that some third-party utilities (most often AVG TuneUp) have been known to interfere with various Office applications (especially programs from the Office365 suite). In this case, removing the conflicting optimization program should solve the problem completely.

It occurs when your Office 365 app does not launch correctly on your system due to the error code 0x426-0x0, which is a Microsoft Office error code. We hope that this article will help you fix your Office 365 error and you can find more details on the website for more information. 

Conflicts between old Office installations: If your Windows installation currently contains multiple Office installations, you can expect conflicts between some program mitts, especially if they end up using common registry files. In this case, the only way to solve the problem is to uninstall the old Office installation.

How to fix Microsoft error code 0x426-0x0

Updated: February 2024

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  • Step 1 : Install PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista).
  • Step 2 : Click Start Scan to find out what issues are causing PC problems.
  • Step 3 : Click on Repair All to correct all issues.


How to fix Microsoft error code 0x426-0x0

Fix Microsoft Office

Depending on your luck, you might be able to resolve the issue by using the fix feature.

  1. Select Control Panel from the menu
  2. Go to Programs
  3. Choose a program or feature
  4. Make your selection between Microsoft 365 and Office 365
  5. Click Edit
  6. You can fix your computer quickly by selecting Repair.

This guide has been written with the idea that the Office repair option might not work for everyone. If this is the case for you as well, move on to the next step.

Set Microsoft Click-to-Run to automatic mode

You will not be able to run Office applications if you disable Microsoft Click-to-Run, so ensure that the service is enabled and set to start automatically.

Here are the steps to follow:

  1. Start by typing services.MSC in the Start menu.
  2. The Services application will be opened when you double-click the first result.
  3. The Microsoft Click-to-Run service must be running.
  4. You can view its properties by right-clicking it if it is not running.
  5. Make sure that Automatic is selected under Startup Type.
  6. Try again to launch Office applications if necessary.

End all Office-related processes

There may be some Office processes that stop you from launching new Office apps during your current Windows 10 session, resulting in the error code 0x426-0x0. All Office-related processes running in the background can be killed using Task Manager.

  1. An active process list can be found under the Processes tab.
  2. Choose End Task from your right-click menu when you are looking at Office processes.

Performing these steps should resolve the issue, but if the issue persists, try restarting the Office application.

Uninstalling Microsoft Office

Finally, reinstall Office after uninstalling it. Backup your files first before reinstalling.

  1. To access the Control Panel, click here
  2. You can find this by going to Programs – and finding the Programs and Features tab.
  3. Make your selection between Microsoft 365 and Office 365
  4. To uninstall, click Uninstall.

It is also important to uninstall all Office files:

  1. To access %ProgramFiles%, click Start.
  2. Microsoft Office and Microsoft Office [version number] can be deleted by finding and deleting the following folders.
  3. Type %ProgramFiles(x86)% again at Start.
  4. If there is an Office folder there, remove it.
  5. The following subfolders need to be removed from the registry editor:
  6. Your computer may not show all of these subkeys. Only remove those that are visible.
  7. The shortcuts to Office need to be removed
  8. Once you have finished downloading Microsoft Office, you can reinstall it

RECOMMENATION: Click here for help with Windows errors.

Frequently Asked Questions

  1. Open the Control Panel.
  2. Go to Programs.
  3. Select Programs and Features.
  4. Select Office 365 or Microsoft 365.
  5. Click the Edit button.
  6. Select Repair, then Quick Fix.

If you're having trouble installing Office on your PC, try restarting your computer and then trying to install Office again. If that doesn't work, use this simple recovery tool to completely uninstall Office. Once the uninstallation is complete, try reinstalling Office.

  1. Right-click on the Start button.
  2. Select the Microsoft Office product you need to fix and select Edit.
  3. Depending on whether your copy of Office is a click-to-install or an MSI, you will be presented with the following restore options.
  4. Follow the on-screen instructions to complete the repair.

  1. Right-click on the Start button.
  2. Select Applications and Features.
  3. Find the application where the error occurred in the list.
  4. Click the Edit button.
  5. Select Repair Online.
  6. Click Restore.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.