Windows Defender Error 577 Or Service Fails To Start - 2 Fix How To
1How to fix windows protection error 577 In Windows
Windows 10's Action Center or the "Security and Maintenance" Control Panel applet may alert you that Windows Defender is off and that no antivirus software is guarding your computer. When you launch the Windows Defender interface, a button to activate protection is present but inoperative. You may encounter Error 577 in the Services MMC when attempting to launch the Windows Defender Antivirus Service (now known as "Microsoft Defender Antivirus Service") or the Windows Defender Antivirus Network Inspection Service (now known as "Microsoft Defender Antivirus Network Inspection Service"):
Windows could not start Windows Defender.
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.
This issue may arise if you previously used a third-party antivirus program but later removed it or the program's trial time has expired. When a third-party antivirus application is installed, Windows Defender is immediately turned off. Windows Defender was most likely disabled to prevent conflicts if a trial version of your anti-virus program (such as Avast, McAfee, Norton, etc.) was preloaded on your machine (or you installed one).
Microsoft's built-in security program which is the main cause of Windows protection errors in Windows, Windows Defender, protects your Windows computer against outside threats (i.e. Windows defender error 57 or cannot verify the digital signature) that may infect it and render it unusable. When they attempt to launch the Windows Defender Service from the Services program, several customers have reported receiving an error number 577.
Windows Defender won't turn on until the third-party antivirus program has been entirely removed. To completely remove all traces of the anti-virus software, you may occasionally need to download and execute the uninstaller/cleanup utility provided by the vendor. Once finished, Windows Defender and any related services need to restart themselves.
This video will help to solve Sign Out Or Remove Microsoft Account In Windows 11 in laptops, desktops running Windows 11, Windows 10, Windows 8/8.1, Windows 7 systems. Works on all computers and laptops (HP, Dell, Asus, Acer, Lenovo, Samsung, Toshiba)"
00:00 Intro
00:10 Edit Registery Files
01:10Turn Off Policy Group Settings
02:04 Outro
Path: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender
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