VirTool:Win32/DefenderTamperingRestore is a detection name used by Windows Defender to identify a potential threat or suspicious activity on your system. However, it is important to note that false positives can occur, and it is possible that this detection is a glitch or an incorrect identification.
If both Malwarebytes and Windows Defender scans show no signs of infection, it is likely that your system is clean. Sometimes, Windows Defender may continue to display the warning due to a temporary error or caching issue. In such cases, manually removing the detected items, as you mentioned, might not be necessary.
To troubleshoot the issue and potentially resolve the continuous warning, you can try the following steps:
1. Update Windows Defender: Ensure that your Windows Defender is up to date by checking for the latest updates. Microsoft regularly releases updates to improve the detection capability and fix false positives.
2. Restart your system: Sometimes, a restart can help to clear temporary issues and cache, and the warning may no longer appear after a reboot.
3. Repair Windows Defender: If the issue persists, you can try repairing Windows Defender by following these steps:
a. Open the Control Panel and go to "Programs" or "Programs and Features."
b. Find "Windows Defender" in the list of installed programs and select it.
c. Click on the "Repair" or "Change" option.
d. Follow the on-screen instructions to repair the installation.
4. Contact Microsoft Support: If none of the above steps resolve the issue, it may be necessary to seek assistance from Microsoft Support. They can provide further guidance and help troubleshoot the persistent warning.
Restoring your system from backups should be your last resort, especially if you have not found any actual signs of an infection. It would be a good idea to make sure your backups are up to date and reliable before considering that option.
Remember to keep your operating system, antivirus software, and other applications up to date to maximize your system's security. Additionally, practicing safe browsing habits and being cautious when downloading and installing software can help prevent potential threats.