Windows 10 Fall Creators Update with unsigned mmc.exe

mmcwindows-10-v1703windows-10-v1709

After upgrading to Windows 10 Fall Creators Update (Version: 1709, OS Build: 16299.64) mmc.exe is not recognized as a signed file.

  1. I tried to execute it from cmd as administrator and worked:

    c:\Windows\System32\mmc.exe c:\Windows\System32\services.msc

  2. When I'm trying to start the Services app (that is using mmc.exe).
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    I get the following error

    enter image description here

The file indeed looks like unsigned (but I didn't checked on previous releases). Comparatively other executable file has the tab Digital Signature.

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  1. I tried to fix everything by running with no success:

    Dism /Online /Cleanup-Image /RestoreHealth
    sfc /scannow

There is any solution to fix this?

Best Answer

I reinstalled Windows 10 by keeping my data. There are drawbacks like you need to reinstall some applications. Windows will generate a list with currently installed applications and put it on your desktop Removed Apps.html.

Steps to do it (as explained here https://www.youtube.com/watch?v=5Zkvlcnv-UU )

  1. Boot in Advanced Start-Up
  2. After restart in Advanced Start Up:

    Troubleshoot > Reset this PC (Lets you choose to keep or remove your files, then re-installs Windows) > Keep my files

  3. Save some files from c:\Windows.old\ that contains

    Users
Program Data
Program Files
Program Files (x86)

  4. Copy additional data from old profiles from Users/ to new ones.

  5. Reinstall applications found in Desktop > Removed Apps.html
  6. Cleanup old install (https://www.windowscentral.com/how-properly-remove-windowsold-folder-windows-10)

    Win+E > This PC > (right click) > Properties > Disk Cleanup > Clean up system files > Previous Windows installation(s) > Ok > Delete Files > Yes

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