Hi Faisal Ahmadi,
Thanks for your post. Generally speaking, there are some reasons causing this problem. The notification that sometimes also manifests as “An administrator has blocked you from running this app” comes up when you try launching or installing a new program. It occurs due to the actions of Microsoft Defender and the User Account Control (UAC) software in trying to keep your PC safe from potential threats. That said, if you are not sure if the file you are trying to run is safe, it’s not advised to try and bypass the “This app has been blocked by your system administrator” message. However, if the message comes up even when you try installing and/or launching trusted software, then you may want to learn how to unblock apps to get that fixed. Please follow the steps to do the troubleshooting:
This App Has Been Blocked by Your System Administrator— Auslogics Blog
Note: If you're running a non-Microsoft antivirus/antimalware product, Microsoft Defender Antivirus goes into disabled mode automatically. When you uninstall the non-Microsoft antivirus/antimalware software, Microsoft Defender Antivirus should return to active mode automatically.
Best Regards,
Ian Xue
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