Error Code: 0x80070426. While error code 0x80070426 usually refers to a non-genuine copy of Windows, it refers to MSE not working properly in this case. When error 0x80070426 occurs, your computer is completely vulnerable because Windows Defender does not even start up and MSE does not function properly.
It is certain that the Windows 10 error code 0x80070426 occurs due to some details of the Windows file system. If you think so, we recommend running an SFC scan. To run it: Click Start menu > type cmd > right click “Command” to view the scan result.
To get Windows Defender error 80070426 for free, you must first uninstall Microsoft Security Essentials. After that, you can follow our solutions here to install Windows Defender beyond startup. It is likely that this type of error occurred during an update due to problematic Windows assembly files on your computer.
Error: 0x80070426 On a computer that is running Microsoft Windows Non-Core Edition, “slui run.exe 0x2a 0x80070426” appears in the error message. Error: 0x80070426 On a computer running a non-core version of Microsoft Windows, most of the error text displays “slui run.exe 0x2a 0x80070426”.
What is error code 0x80070426 in Windows 7?
If you received this warning related to your computer, it means that your technical work has failed. Windows error code “0x80070426 7” is considered one of the problems that experts say users may encounter as a result of incorrect or unsuccessful installation, as well as removal of software that could leave incorrect entries in model elements.
What’s the new version of Windows 10 Version 1511?
New Credential Guard features in Windows version 10, 1511. Credential Manager support. Identifiers why they are stored.
How do I fix error code 0x80070426?
The solution to this problem is to simply uninstall Microsoft Security Essentials to let Windows Defender do its job and protect your PC. Right after that, all the steps that users have to go through in order to fix the 0x error are listed. Hold down any Windows key and press R. In the Taskmgr dialog, enter run dialog.
What is error code 0x80070426?
Although error code 0x80070426 is usually associated with a non-original master copy of Windows, in this case the error is due to MSE not working properly. When error 0x80070426 appears, it makes your computer very vulnerable to Windows because Defender may not even start and MSE may not work properly.
What does error code 0x80070426 mean?
Error code 0x80070426 is usually associated with a non-original new copy of Windows. In this important case, the error is due to the fact that the MSE does not work correctly. When slip 0x80070426 appears, your computer is left permanently vulnerable because Windows Defender doesn’t even start and MSE doesn’t work properly.
What is the error code 0x80070426 all about?
Error code 0x80070426 occurs when users upgrade from Windows 10 to an earlier version of Windows such as 7, Windows 8, or 8.1. During the update, Microsoft Security Essentials will likely be removed and Windows Defender installed instead. In this case, users may sometimes encounter an error code like 0x80070426.

Ermias is a tech writer with a passion for helping people solve Windows problems. He loves to write and share his knowledge with others in the hope that they can benefit from it. He’s been writing about technology and software since he was in college, and has been an avid Microsoft fan ever since he first used Windows 95.