If you are using a debugger based on the Windows debugging engine, you can use the !dreg command to dump a registry key, but what if you want to modify a registry key?
I don't know how often it happens to you,
but it happens to us a lot here inside Microsoft:
You are given a remote debugging connection to
a process that is running on some computer to which
you have no physical access.
You therefore cannot just run
and do your registry work there.
You may also be in a situation where you don't want
regedit because running another
process would interfere with the issue you are debugging.¹
One way to set a registry key from inside the debugger is
simulate a call to the
Or you can think outside the box:
.shell command and shell out to
0:001> .shell reg add hkcu\Software\Contoso /v UseWarpCore /t REG_DWORD /d 1
This assumes that the debugger was created without the
Otherwise, you're back to simulating the call.
Usually because you are debugging some focus-related
problem, and running
regedit changes focus.
Or, if you work in my building,
because you are debugging Explorer itself
and therefore cannot launch any new programs.