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SOLVED - Win 10 MMC cannot create Snap-in

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ENAR:
When trying to use the Windows 10 built-in Disk Management tool, I get an error saying that MMC cannot create the Snap-in. (Some other functions also report this same type of problem.)

After having read a myriad of articles about the deletion and auto-recreation of the relevant key Registry items (none of which helped), I am looking for a way either to restore the correct entries to the Registry, or some other way to fix this narrow scope of essential repair. I am seeking a way to fix the problem, short of a complete restoration requiring the subsequent re-installation of all user-loaded programs (even if the option of saving personal files is used).

Can the Tweaking.com Windows repair Pro version handle this specific issue?

One other thought I have is to export the necessary section of Registry values for MMC and Snap-ins from another Windows 10 computer, and then Import them into the "problem child" computer. Any thoughts?

Thanks in advance for any ideas.

Boggin:
I don't know if the repair program would resolve that but I would try a repair install, which won't affect personal stuff or installed programs.

You would need Win 10 install media which you can create from https://www.microsoft.com/en-gb/software-download/windows10

Read the instructions as they differ depending upon whether you want a DVD or USB as your install media.

This ISO is for 1709 - let me know if you need an earlier version.

When done, with the machine booted up, open Windows Explorer - This PC - insert the media and double click on its drive.

If using a disk then that should start the process but if using an USB, that will open to the files where you would double click on setup Application.

You may have to go into Settings/Apps/Default apps and change back to your preferences but your personal stuff and installed programs will remain intact.

I tend to perform a repair install if I have problems with my Win 10.

ENAR:
Thanks. I looked at that, proceeding up to the ultimate commitment, but the point I got to said that while the personal files would be saved, non-Windows programs would need to be re-installed. Curiously, the Windows 10 installation DVD I created from an ISO did not have the same screens and menu choices in a few online articles I read on the subject. They were similar, but not the same. And the devil is in the details, with a simple selection made on limited information that too often leads to a mini0catastrophe.

Can you confirm that this process does NOT wipe installed programs?

Thanks, again.

Boggin:
Yes, I can confirm that - I've done it a number of times but if you are concerned then create a system image onto external media.

This is not a Reset which would be done from the advanced boot options but a repair install of Windows done from within Windows.

The only program I had to reinstall when I first upgraded to Win 10 was CCleaner - I've never had to reinstall any 3rd party programs in subsequent repair installs.

I may have had to re-pin IE to the taskbar and make that my default browser again and perhaps other app preferences such as for WMP and Adobe Reader, reset my Realtek HD Audio Manager, reinstall my Win 7 wireless driver, turn off fast start up and re-customize my Command Prompt, but they were just annoyances rather than anything serious.

I've recently advised another member to perform a repair install and now he's happy with his system.

ENAR:
Thanks. I''ll try that again.

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