UAC prompt for Task Manager. MMC blocked. What happened?


  1. Calab
    Posts : 65
    Windows 11
       New #1

    UAC prompt for Task Manager. MMC blocked. What happened?


    I don't know if a recent Windows 10 update changed something, or if I have a virus, or what, but my Win 10 Pro 64bit computer is behaving differently today than a day or so ago.

    If I try to open the Task Manager I get a UAC prompt.

    If I try to open Computer Management, I get a "This app has been blocked for your protection" message for MMC.EXE.

    I just downloaded MalwareBytes software and Edge blocked the download because it may be harmful. I was able to select KEEP and install the software. I am currently scanning my system, but nothing found so far.

    This messages normally do not appear on my system.

    I have not installed any new software recently, except for Windows updates. My user is an administrator and the only user on the system.

    One other item I've noticed is that some apps can take many minutes before they open. An example is Notepad. I clicked the icon in the Start menu and nothing happened. I then clicked on Notepad++ and it opened right away. After a few minute Notepad showed up.

    This is a 64 bit Windows Pro installation, build 19042.685 of version 20H2 with experience pack 120.2212.551.0.

    Can someone tell me why this is happening and how I could fix it?

    - - - Updated - - -

    FYI... MalwareBytes scan just finished and found no issues. I am installing TrendMicro Housecall now to perform another scan.
      My Computer
    Quote Quote

  3. spunk
    Posts : 5,277
    Windows 11 Pro 64 Bit 22H2
       New #2

    It's possible that Computer Management is being blocked by SmartScreen. We suggest disabling it and see if it helps. Follow the steps below:

    1. Click the Start button.
    2. Type smartscreen in the search bar.
    3. Click Change SmartScreen settings.
    4. Click the drop-down arrow in the Security row.
    5. Click Change settings beneath the WindowsSmartScreen row.
    6. Click Don't do anything (turn off Windows SmartScreen).
    7. Click OK.
      My Computer
    Quote Quote

  4. Calab
    Posts : 65
    Windows 11
    Thread Starter
       New #3

    When I type "smartscreen", the closest item I get is "App & Browser Control". All the smartscreen setting there are "off".

    One thing that I just notice... In the "This app has been blocked..." pop-up that I see when I try to open computer management it shows the publisher for mmc.exe as "unknown". I would expect that to say "Microsoft". If I go to mmc.exe and open the properties, I do see Microsoft under the "Details" page.
      My Computer
    Quote Quote

  6. FreeBooter
    Posts : 5,622
    Windows 11 Pro 64-bit
       New #4

    Open command prompt as a administrator and execute Sfc /scannow command.

    Execute the "Change_UAC_Settings.bat" batch script to change User Account Control (UAC) settings in Windows 10.

    Execute "ResetLGP.bat" batch script to reset Local Group Policy settings to system default settings.
    UAC prompt for Task Manager. MMC blocked. What happened? Attached Files
      My Computer
    Quote Quote

  7. Calab
    Posts : 65
    Windows 11
    Thread Starter
       New #5

    I ended up just wiping the computer and doing a fresh Windows installation. It was due anyhow. System is much snappier now!
      My Computer
    Quote Quote

 

  Related Discussions
So im going through my pc's with a comb (you've noticed if you are following this forum lol) and i came across this. Due to the fact I have 2 entries on this pc, and 1 on my backup pc, I "think" i know what it is, but I want to make sure as I...
Hi again, So there is this little download manager called DIM from DAZ3D where I download my purchases from their store. Worked fine before my switch to WAVE Broadband. Now I'm not able to log into the account via the DIM. Can't be system wide...
In windows 10 Pro im trying to delete a file called dsovlwx.exe . I found of where the folder is located and i cant delete and its taking up to much system resources for no reason as i keep multitasking the ram usage of that process keeps increasing...
I have a machine whose disk is nearly always running at 99-100% usage (according to Task Manager) even though no individual tasks appear to be responsible. For instance there might be three tasks running at 0.1MB/s and the rest at 0MB/s, but the...
I have attached a screenshot of my CPU usage in programs and usage monitors below. I am extremely fed up at this point so hopefully this post will make sense :) The problem I have noticed my CPU usage in task manager is always 100% and the boost...
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

 © Designer Media Ltd
All times are GMT -5. The time now is 20:37.
Find Us




Windows 10 Forums