Error 577: Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a filed that was signed incorrectly or damaged, or that might be malicious software from an unknown source.”
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: Uninstall the main external antivirus package. Always keep in mind that when you uninstall a third-party computer virus package, it automatically disables all security packages of the built-in package, which is likely Windows Defender.
Solution #2: Change the registry magic wand that links Windows to Defender.
Using Solution #3: System Restore.
How to configure Windows Defender in Windows 10?
Turn on Microsoft Defender. Select the antivirus launch menu.
In the search bar, type group policy.
Select Computer Setup > Administrative Templates > Windows Components > Microsoft Defender Antivirus.
Scroll down and select Turn off Microsoft Defender Antivirus.
Select Disabled or Not Configured.
Select Apply > OK.
Why does Windows Defender not update?
If you encounter these issues, you can also try the following: Restart your computer. …
Remove existing antivirus and antispyware software. …
Scan your computer for malware. …
SFC scan. …
Clean start. …
Restart the Security Center service. …
Delete the conflicting registry entry. …
Enable Windows Defender from the policy group.
Could not start Windows Defender error 577?
Windows failed to start Windows Defender Service Error 577: Windows cannot verify the digital signature of the idea file. A recent modification to a hardware or software application may have installed an incorrectly signed application, loaded, or may be a malicious tool from an unknown source.
Can Windows Defender start Error 577?
Windows was unable to start the Windows Defender service. Error 577: Windows does not see the digital signature on this file. A recent change in computing device software could install a genuine file that was incorrectly signed, corrupted, or it could be malware from a trusted source.
Why does Windows Defender keep getting error 577?
Another reason for Defender to fail is undoubtedly malware that corrupts some related files or possibly changes registry settings. The best combination with the easiest way to fix Windows Defender error 577 is to use the amazing optimizer from PC Health Advisor. It scans your PC for community issues and bugs.
What causes Windows Defender to say error code 577?
While migrating Windows Defender Windows failed to start the Windows Defender Network Inspection service on local computer due to error code 577. What can cause Windows Defender error 577? Most often, Windows error 577 occurs on a computer that, according to experts, contains third-party antivirus software.
Why is there error 577 on Windows Defender?
Windows Defender Error 577 is one of those errors that prevents you from enabling antivirus for PC in Windows 10 using Defender. Error: “Error 577: Windows cannot verify the digital signature of this file…”.
Why do I get error 577 when I start Windows Defender?
Error 577 usually appears when you remember to run Windows Defender and prevent it from opening on your PC. You can avoid almost all of these issues by simply purchasing yourself a proper third-party antivirus, which bypasses the standard Windows protection, I would say.
Could not start Windows Defender service error 577?
Windows may not start the Windows Defender service. Error 577: Windows cannot verify your current digital signature for this file. The latest hardware or software graciously installed a file that turned out to be poorly signed, corrupted, or could have been malware from a major unknown source.
How do I fix Error 577?
How to fix Windows Defender error 577?
- Consider third-party antivirus software coverage. …
- Change your registration. …
- Completely uninstall third-party antivirus tools.
- Disable… tethering to Windows Defender from Action Center. …
- Change the registry security permissions. …
- Restart the Security Center and 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.