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  1.    26 May 2017 #1
    Join Date : Jul 2015
    Posts : 139
    Windows 10

    For mmc.exe I get "This app has been blocked for your protection"


    When I try to run anything that uses mmc.exe, I get the message "This app has been blocked for your protection" and "An administrator has blocked you from running this app." This happens even if I try to run whatever it is as administrator. This is preventing me using the services control panel and the device manager.

    The background is that I have just upgraded to the Creator's Edition using the upgrade tool because Windows Update isn't working for me. The upgrade didn't fix the problem with Windows Update, but it appears to have created this additional problem.
      My ComputerSystem Spec
  2.    26 May 2017 #2
    Join Date : Feb 2016
    Maribor, Slovenia
    Posts : 8,870
    Windows 10 (Pro and Insider Pro)

    I would try to fix update problem first. It also could have the same roots.

    D you have any Grup policy restrictions applied? Tools like Cryptoprevent can do that..

    Which version is your system? (15063.332 is the latest)
      My ComputerSystem Spec
  3.    26 May 2017 #3
    Join Date : Jul 2015
    Posts : 139
    Windows 10
    Thread Starter

    Quote Originally Posted by AndreTen View Post
    I would try to fix update problem first. It also could have the same roots.

    D you have any Grup policy restrictions applied? Tools like Cryptoprevent can do that..

    Which version is your system? (15063.332 is the latest)
    Thanks for replying. I have version 15063.332. I don't have any group policy restrictions to the best of my knowledge. I posted on the Microsoft forum as well and the Microsoft person suggested doing a clean boot and that sounds reasonable, so I'm going to try that first. If that gets mmc.exe working, then I can stop the UpdateOrchestrator service and if I can do that I have a chance of repairing WindowsUpdate.
      My ComputerSystem Spec
  4.    26 May 2017 #4
    Join Date : Feb 2016
    Maribor, Slovenia
    Posts : 8,870
    Windows 10 (Pro and Insider Pro)

    If that doesn't work, start the elevated administrator account, log on to it and run mmc there. Disable it afterwards.

    enable-disable-elevated-administrator-account-windows-10
      My ComputerSystem Spec
  5.    28 May 2017 #5
    Join Date : Jul 2015
    Posts : 139
    Windows 10
    Thread Starter

    I finally managed to stop the wuauserv and bits services and delete the contents of \Windows\SoftwareDistribution, so hopefully that will have solved the update problems. I was able to run an app that uses mmc.exe (namely the Services control panel) when logged in to the admin account, but I still can't run it when I am logged in as a normal administrator.
      My ComputerSystem Spec
  6.    28 May 2017 #6
    Join Date : Jul 2015
    Posts : 139
    Windows 10
    Thread Starter

    How do I get round this if the "app" in question that is being blocked is mme.exe, which is an essential part of Windows and is necessary in order to use things like control panels and the device manager? I can't switch to the administrator account every time I want to use a control panel.
      My ComputerSystem Spec
  7.    28 May 2017 #7
    Join Date : Oct 2014
    Trnava
    Posts : 2,855
    Windows 10.4 Home 1709 x64

    Have you tried removing catroot2's folder?

    Since you can not run system apps because of an invalid certificate/publisher.

    taskkill /im TiWorker.exe /f
    stop bits /y
    stop cryptSvc /y
    stop UsoSvc /y
    stop winmgmt /y
    taskkill /im TiWorker.exe /f
    net stop wuauserv /y
    takeown /f "%WINDIR%\System32\catroot2" /a
    icacls "%WINDIR%\System32\catroot2" /grant:r Administrators:F /c
    del "%WINDIR%\System32\catroot2" /s /f /q
    http://www.thewindowsclub.com/catroo...-reset-windows
    Attached Thumbnails Attached Thumbnails 1077957.png  
      My ComputerSystem Spec
  8.    28 May 2017 #8
    Join Date : Oct 2013
    Posts : 25,174
    64-bit Windows 10 Pro build 17040

    Do you mean "mmc.exe" instead?
      My ComputersSystem Spec
  9.    28 May 2017 #9
    Join Date : Jul 2015
    Posts : 139
    Windows 10
    Thread Starter

    Quote Originally Posted by Brink View Post
    Do you mean "mmc.exe" instead?
    Yes, that's the one. I keep getting MMC and MME muddled up in my brain.
      My ComputerSystem Spec
  10.    28 May 2017 #10
    Join Date : Oct 2013
    Posts : 25,174
    64-bit Windows 10 Pro build 17040

    LOL, I can relate to that.

    Are you getting the exact warning message as the example in this tutorial when you try to open MMC? Usually, you shouldn't. Instead, you should just see a message that basically says you can't use unless you're an administrator.

    If you like, you could try using the method in the tutorial below to create an elevated shortcut for your standard user account that should allow you to run it.

    Elevated Program Shortcut - Create for Standard User - Windows 7 Help Forums
      My ComputersSystem Spec

 
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