Press Win key + R. This will open Run.
Type “regedit” and hit enter.
Navigate to these keys:
Change value of ‘DisableAntiSpyware’ and ‘DisableAntiVirus’ from ‘0’ to ‘1’.
After changing the values go to ‘C:\Program Files\Windows Defender’ and open ‘MSASCui.exe’ file.
Solution 1 – Consider switching to a third-party antivirus software
Solution 2 – Change your registry
Solution 3 – Completely remove third-party antivirus tools
Solution 4 – Turn on Windows Defender from Notification Center
Solution 5 – Change the security permissions in your Registry
Solution 6 – Restart Security Center and Windows Defender service
How to fix Windows Defender error code 577?
What to do with Windows Defender Error 577? Solution #1: Remove the external computer package. Always remember that when you uninstall a third-party antivirus package, Windows automatically disables the built-in warranty package, i.e. Windows Defender. #2:
Solution Change the registry key associated with Windows Defender.
Using Solution #3: System Restore.
Why is Windows Defender not turning on?
You have installed any other security software that is interfering with Defender.
Your computer’s time and date are out of sync and are also incorrect.
You are using an old Windows 10 transcription.
A common system configuration error has occurred on your device.
Windows Defender is unmistakably disabled or disabled by a group in a policy.
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How to configure Windows Defender in Windows 10?
Turn on Microsoft Defender Antivirus. Select Start from the menu.
In any search bar, enter a policy group.
Go to Computer Configuration > Administrative Templates > Microsoft Windows Components > Antivirus Defender.
Scroll down the list and select Disable Defender Antivirus.
Select Disabled or Not Configured.
Select Apply > OK.
Why does Windows Defender not update?
If these problems occur, customers can try the following: Restart the computer. …
Remove any remaining antivirus, antispyware, and software. …
Scan your PC for malware. …
SFC scan. …
Clean start. …
Restart the Security Center service. …
Delete the conflicting registry entry. …
Enable Windows through Defender Group Policy.
Could not start Windows Defender error 577?
Windows couldn’t start Windows Defender Windows Service Error 577: Your file’s digital signature is simply not verified. A recent hardware or application change may have resulted in a mislabeled or fake instruction being installed, or may be software from an unknown source.
Can Windows Defender start Error 577?
Windows can certainly start the Windows Defender service. Windows Error 577: Unable to verify Digital Unsecured for this file. A recent bolt or software change could have injected a file that was not properly signed, corrupted, or could lead to malware from an unexpected source.
Why does Windows Defender keep getting error 577?
Another reason for disabling Defender is that malware corrupts some associated files or registry settings it creates. The easiest way to fix Windows Defender error 577 is to use PC Health Advisor’s unique computer optimizer. Is your computer being scanned for bugs and community issues?
What causes Windows Defender to say error code 577?
While running Windows Defender, Windows couldn’t think of the Windows Defender Network Inspection Service related to Local Machine Error Code 577. What could be causing Windows Defender Errors 577? As you can see, Windows Defender Error 577 mostly occurs on a computer that has third-party antivirus software installed.
Why is there error 577 on Windows Defender?
Error 577 in Windows Defender is one such type of error that prevents you from enabling your antivirus in ten windows using Defender. Error: “Error 577: Windows cannot verify an insecure personal digital file…”.
Why do I get error 577 when I start Windows Defender?
Error 577 usually appears when you are trying to use Windows Defender and prevents it from appearing outside of your computer. Chances are you’ll just avoid these issues by purchasing a third-party antivirus that experts say bypasses Windows protection by default.
Could not start Windows Defender service error 577?
Windows cannot start the Windows Defender service Error 577: Windows cannot verify the electronic signature of this file. A recent computer or software modification might install a file that was filled out incorrectly, corrupted, or is definitely malware from a mysterious source.
How do I fix Error 577?
How to fix Windows Defender error 577?
- Consider using third party antivirus software. …
- Change your registration. …
- Completely uninstall third-party antivirus software. …
- Switch to the Windows Defender notification from the center. … Change
- security permissions in the registry….
- Restart Security Center using the Windows Defender service.
Vijay is a tech writer with years of experience in the Windows world. He’s seen it all – from simple problems to catastrophic system failures. He loves nothing more than helping people fix their PCs, and he’s always happy to share his wisdom with anyone who needs it.
When Vijay isn’t fixing Windows problems, he likes to spend time with his wife and two young children. He also enjoys reading, playing cricket, and watching Bollywood movies.