Paul actually wrote:

The DWORD is in their picture of Regedit.

Just to clarify, that was *my* picture of my edit to 200 files.
The Microsoft KB KB2022295 instructions just said to create a DWORD.
They didn't say whether to create a 32-bit or 64-bit DWORD.
I can't reboot or kill explore.exe until the MSRT completes which has been
running for almost 24 hours so I would hate to kill it now.

And I don't pretend to understand why Microsoft did this.
It's pretty bizarre.

I thank you for *finding* what the problem was.
I knew it was *something* but the search keywords were all generic until
you came up with the MultipleInvokePromptMinimum registry key.

With *that* keyword, stuff started popping up in the searches!

If I want to select 60,000 items and "do something" using
the Context Menu, why shouldn't I be allowed to do it ?

Maybe they could have put up a dialog with:

"Did you really mean to name_of_command on these 60,000 items ?"
Cancel or OK

Didn't Windows XP do that if you opened up an inordinate number of files?

Anyway, I agree 100% with you and I thank you for finding the registry key.

After 4 different Windows 10 hacks, I finally have the VPN setup on Windows
10 almost as efficient as it was on Windows XP.