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.”
1. Change values in registry The first thing you can try out right away to fix error 577 is to alter some values of Windows Defender registry keys.
2. Change permissions in your Registry
3. Install fresh Windows updates
4. Delete/Disable anti-malware software
5. Reboot Security Center service
6. Run a System File Checker (SFC) scan
7. Scan your PC for malware
Could not start Windows Defender error 577?
Unable to start Windows. Windows Defender Service Error 577: Windows cannot scan an untrusted digital face for this file. Recent changes to a computer system or software may have applied a file that was incorrectly signed, corrupted, or often malware from an unknown source.
Can Windows Defender start Error 577?
Windows may have failed to start the Defender service. Error 577: Windows cannot verify the new digital signature for this file. A recent hardware or software change likely installed a file that turned out to be missigned, corrupted, or it could be malware from a different unknown source.
Why does Windows Defender keep getting error 577?
Another reason to disable Defender is malware that corrupts some related files or affects registry settings. The best and fastest way to fix Windows Defender error 577 is to use a dedicated PC Health Advisor computer optimizer. It will make sure to scan your PC for system issues and issues.
What causes Windows Defender to say error code 577?
While running Windows Defender, in addition to error code 577, you may receive the error “Windows may not be able to start the Windows Defender Network Inspection service on local computer.” What cause do you see, Windows Error Defender 577? In most cases, Windows Error 577 intruder occurs on a computer that offers 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 your antivirus using Defender on Windows 10. Error: “Error 577: Windows cannot verify the email signature of this file…”.
Why do I get error 577 when I start Windows Defender?
Error 577 usually appears when you try to run Defender from Windows and prevents it from working on your PC. You can easily avoid such problems if your site has a third-party antivirus program installed that safely bypasses the standard protection provided by Windows.
Could not start Windows Defender service error 577?
Windows failed Windows Service Defender Error 577: Windows cannot verify the digital signature for this particular file. A recent hardware or platform change could have resulted in the installation of an incorrectly signed or typed computer file, or it could be malicious systems from an unknown source.
How do I fix Error 577?
How to fix problems with Windows Defender 577?
- Consider switching to a third-party antivirus system. …
- Change your registration. …
- Completely uninstall third-party antivirus tools. …
- Turn on Windows Defender through the Alert Center. …
- Change the security permissions you have in the registry. …
- Restart the Windows Security Center and the 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.