VHD File Won't Mount From Explorer

I'm not sure when, but "recently", my ability to mount a VHD file from Explorer got broken. Double-clicking gives me the error message:
This app can't run on your PC. To find a version for your PC, check with the software distributor.
I tried "Open with..." and selected "diskmgmt.msc" but got the same error message.
I tried "Open with..." and then navigated to Explorer.exe (it was not one of the apps shown in the popup), the error message was:
The program you have selected cannot be associated with the file type.

The VHD file mounts fine when I go to Disk Management > Action > Attach VHD, so there's nothing wrong with the file.

Is there a way to fix this, or is this a known issue?

Go here, scroll down to the index and download and run the VHD reg fix. See if that helps

vhd

Windows Explorer

Virtual Hard Disk image file

GopherMan said:

I tried "Open with..." and selected "diskmgmt.msc" but got the same error message.
I tried "Open with..." and then navigated to Explorer.exe (it was not one of the apps shown in the popup), the error message was:

Click to expand...

First one will never work.. second one never tried that...
However this should work: You right click the file in explorer, and use Mount option from that list.

Tester said:

First one will never work.. second one never tried that...
However this should work: You right click the file in explorer, and use Mount option from that list.

Click to expand...

Why bother when you can just reset it back to the default Windows File Explorer as the OP wants it?
And I don’t believe mount will work if the default association (File Explorer) has been corrupted.

Running the reg file to remove the "UserChoice" key did not fix the problem.
I have restored it, which interesting has ProgId set to "Applications\diskmgmt.msc"
Right-clicking does not provide any "Mount" option.

What is configured under the key OpenWithProgIds (this is the only key/folder under .vhd for me)
OpenWithProgIds only has an AppX-indentifier key.

What if you delete userchoise, and the openwithlist? what happens then. (export to .reg to make backup)

Deleting both those, leaving only OpenWithProgids, did not resolve the issue.
My Progids is different. See snapshot.

That shapshot is after I restored from previous attempts.

Can you remove that OpenWithProgids key as well, and test then? (just booted a not used 24h2 vm, and thar key was not there after default install, i guess some other app has placed that there for me.)

When that not works, can you also show what keys you have under:
Computer\HKEY_CLASSES_ROOT\Windows.VhdFile

"When that does not work..." That was a good guess. It did not.
Here's what I have for Windows.VhdFile:

[HKEY_CLASSES_ROOT\Windows.VhdFile]
@="Disc Image File"
"FriendlyTypeName"=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,\
00,6f,00,6f,00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,\
32,00,5c,00,73,00,68,00,65,00,6c,00,6c,00,33,00,32,00,2e,00,64,00,6c,00,6c,\
00,2c,00,2d,00,33,00,31,00,34,00,37,00,35,00,00,00

[HKEY_CLASSES_ROOT\Windows.VhdFile\DefaultIcon]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,69,00,6d,00,\
61,00,67,00,65,00,72,00,65,00,73,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,33,\
00,32,00,00,00

[HKEY_CLASSES_ROOT\Windows.VhdFile\shell]

[HKEY_CLASSES_ROOT\Windows.VhdFile\shell\mount]
"CommandStateSync"=""
"ExplorerCommandHandler"="{9ab3b1c9-3225-4bb4-93b6-bfb3c0d93743}"
"HasLUAShield"="true"
"MultiSelectModel"="Document"

[HKEY_CLASSES_ROOT\Windows.VhdFile\shell\mount\command]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,45,00,78,00,70,00,6c,00,6f,00,72,00,65,00,72,00,2e,00,65,00,78,00,\
65,00,00,00
"DelegateExecute"="{9ab3b1c9-3225-4bb4-93b6-bfb3c0d93743}"

[HKEY_CLASSES_ROOT\Windows.VhdFile\tabsets]
"selection"=dword:00000704

3 things that are a mismatch with a fresh install:







The same should be done here:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Windows.VhdFile

Can you export both those locations and post them? I can import on my side and see if that resolves it.