Windows Defender Antivirus Error 577 | Antivirus Setup

1. How to Fix Windows Defender Antivirus Error 577? To resolve the Windows Defender Antivirus Error 577 problem, carry out the troubleshooting steps mentioned below. Try to download the PC Repair tool from the manufacturer website. Install and launch the PC Repair tool on your computer. Click the Start Scan button to start the scanning process. Once the problem is detected, click the Repair All button. This will resolve the Windows Defender Antivirus Error 577 problem. If the issue remains unresolved, follow the instructions given here. You can switch to a third-party antivirus software instead of using the built-in antivirus program, i.e., Windows Defender on the Windows computer. The Windows Defender antivirus program offers only basic protection and it lacks some advanced features to protect the computer. Registry:

2. Hold the Win and R keys together on the computer’s keyboard. The Run dialog box will appear on the screen. Once you type ‘regedit’ in the Open field, select the OK option. As soon as the Registry Editor window appears, go to the ‘HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender’ key on the left panel. On the main panel, find the DisableAntiSpyware option and select it. Change the value from o to 1 in the Value Data field and click the OK button. Likewise, change the value for DisableAntivirus. Exit the Registry Editor window and navigate to the C:\Program Files\Windows Defender location. Run the MSASCui.exe file. Removing the Third-party Antivirus Program The built-in Windows Defender antivirus program will not work properly if you have installed any third-party antivirus on the Windows computer. Because, the third-party antivirus will interfere with the Windows Defender program. Try to remove or uninstall the installed third-party antivirus software from the Windows computer. Read more.....