VirTool:Win32/DefenderTamperingRestore is a detection name used by the built-in Microsoft Defender anti-virus program. This detection means that a program is trying to disable Defender. This usually happens when you install a third-party anti-virus program.
If you decide that Microsoft Defender does not provide enough security and install a third-party anti-virus program, Microsoft Defender will be disabled because two anti-virus programs would clash with each other. When this happens, Microsoft Defender shows the VirTool:Win32/DefenderTamperingRestore alert to inform you that a program is trying to disable it.
If you were shown this notification when you installed a third-party anti-virus program, you can just ignore it. However, if you did not install any security program, the detection may mean that some piece of malware is trying to disable Microsoft Defender to avoid detection and Defender has blocked it from doing so.
Developers of malicious infections, especially ones that are programmed to work in the background, always try to come up with ways to avoid detection by anti-virus programs. Trying to disable an anti-malware program is one way to do that. If successful, the malware could carry out its malicious activities for much longer.
How to remove VirTool:Win32/DefenderTamperingRestore
Whether you need to do anything depends on why you’re being shown that VirTool:Win32/DefenderTamperingRestore is detected. If you recently installed a third-party anti-virus program, you don’t need to do anything because it’s just the anti-virus program disabling Defender to avoid clashing with it. There’s also no need to use two anti-virus programs so you will need to choose which one you prefer.
However, if you did not install anything, it’s possible that you’re dealing with malware. Unless it shows very obvious signs of being present, you may not necessarily notice it. We recommend installing a different anti-virus program and scanning your device. If the anti-virus program does detect something, make sure to remove it.
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The article is only meant to be used for educational purposes. If you follow the instructions given in the article, you agree to be contracted by the disclaimer. We do not guarantee that the artcile will present you with a solution that removes the malign threats completely. Malware changes constantly, which is why, in some cases, it may be difficult to clean the computer fully by using only the manual removal instructions.