Windows Defender Error 577

How to Fix Windows Defender Error 577, Cannot verify the digital signature

At the point when equipment or programming is installed and doesn’t accompany a digitally marked file, it raises a doubt of any Antivirus and Windows itself. Windows Security, otherwise known as Windows Defender, has been known to toss Error 577 when it cannot verify the digital signature in such a circumstance. This post will assist you in settling the issue.

Windows couldn’t start Windows Defender Service

The full error message is as per the following:

Windows could not start Windows Defender Service.

Error 577: Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that was signed incorrectly or damaged, or that might be malicious software from an unknown source.

Windows Defender Error 577, Cannot verify the digital signature

The error typically happens when you turn on Windows Defender, and that is the point at which the contention happens with existing programming. It’s any product, however security programming that might be causing the issue.

1] Check for Residual Software

If you had installed another Antivirus or as of late uninstalled a product, then it is conceivable that it has abandoned a few files, and the uninstallation is deficient. You should physically search for files or find an uninstaller for the program to erase it. If it is security programming, then use these AntiVirus Removal Tools. If it isn’t on the rundown, you can attempt free uninstaller programming to erase the remaining files.

2] Check Webroot uninstallation

If you have used Webroot, it might not have uninstalled completely and appropriately. Use this tool from Webroot to finish the uninstallation and check whether it makes a difference.

3] Turn on Windows Defender

We have a comprehensive post on different ways you can follow when you cannot turn on Windows Defender. If you are alright with Registry, then follow these steps to turn on Windows Defender.

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Press Win key + R to open the Run prompt.

Type “regedit” and press the Enter key

Explore these keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender

Change estimation of ‘DisableAntiSpyware’ and ‘DisableAntiVirus’ from ‘0’ to ‘1‘.

If it isn’t there, you can make the DWORD with similar names and change the worth.

Attempt re-running the Windows Defender, and it should work.

I trust the post was anything but difficult to follow, and you had the option to turn on the Windows Defender and resolve the Error 577 issue. While the last method turns out great, know that you need to dispose of any preliminary rendition of security programming or leftover library and files to determine it at long last.

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