To remove the relevant policies that are blocking MRT.exe, follow these steps: Windows 10/11 Professional Edition and higher If you’re sure that the system is clean from malware, then proceed further.) (First, make sure to run a thorough virus scan using the latest definitions. The “app has been blocked” error implies that MRT is most likely blocked by a custom software restriction policy or AppLocker setting. If some policy settings are blocking MRT.exe from running, this article will tell you how to remove those policies and enable MRT.įix: MRT.exe Blocked by System Administrator If MRT or MSRT is blocked, then it could be the handiwork of some malware (or in the aftermath of malware removal) on the computer.

This tool scans for a specific, prevalent malicious software, which amounts to a small subset of all the malicious software that exists today. MSRT is a tool to remove infections from the computer.

While you may run them in addition to third-party security software, it is generally not recommended to run them exclusively on the system.This app has been blocked by your system administrator.Ĭontact your system administrator for more info. That's where Microsoft's Software Removal Tool may come in handy as the installed security solution may not detect or remove all threats that Microsoft's tool supports.īoth programs are not providing the same level of protection that many third-party solutions offer due to their limited threat detection. Windows Defender was designed to deactivate automatically when another security solution is installed. It won't hurt obviously to run the Malicious Software Removal Tool once a month after it has been updated on Patch Day to make sure nothing slipped by. While it is possible to list all the threats that Microsoft's Malicious Software Removal Tool supports, there seems to be no way to do the same for Windows Defender's definitions database. I'm not sold on that 100% though considering that Windows Defender is listed as an option to detect and remove threats whenever a new MSRT update comes along.

Msrt windows