
To do this, right-click on the Windows key and select New, then go to Key.If this installer key does not exist, you will need to create it.HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindowsInstaller.Open Registry Editor by pressing the Windows key and R at the same time.

Once your computer is in safe mode, try to install the tool again.In the menu that appears, select Safe Mode and press Enter.Restart your computer and press F8 before the Windows logo appears.Windows Malicious Software Removal Tool does not install Use safe mode You should also make sure that Windows Firewall and Windows Defender are enabled. There are even free antivirus tools that will protect your system effectively, such as Malwarebytes. You should always have an antivirus tool installed and running in the background. Never rely solely on running the Malicious Software Removal Tool regularly to protect your system. So if you have a good antivirus, you should not worry about running this tool. Typically, antivirus and antimalware software such as Windows Defender, which runs automatically, will block anything the Microsoft Windows Malicious Software Removal Tool finds.

It is more of a spot check tool when you know your system was at risk of getting malware. If you’ve been running a Windows system (including Windows 7, Windows 10, and Windows 11) without antivirus software for a while, it’s a good idea to use this tool to scan for malware that your system might be infected with. Microsoft maintains an important tool for Windows users, the Malicious Software Removal Tool. Check How to Fix ‘Windows Malicious Software Removal Tool Not Installing’ Issue
