Where is add-in manager check-box stored?

[Guest]

In tools/options/other/Advanced/Add-in manager you can install add-ins (not
COM add-ins) and mark them with a check-box to indicate whether or not they
should be loaded (I believe). Where is this check-box value recorded? I
want to be able to change it programmatically.
I can't find it anywhere in the registry. The path to the relevant DLL is in
HKLM\software\microsoft\exchange\client\extensions but this doesn't seem to
change when the check-box is used. I think it also gets stored in extend.dat
but I thought this just cached stuff that was in the registry anyway.

 

[Vanguard]

In tools/options/other/Advanced/Add-in manager you can install add-ins
(not
COM add-ins) and mark them with a check-box to indicate whether or not
they
should be loaded (I believe). Where is this check-box value recorded? I
want to be able to change it programmatically.
I can't find it anywhere in the registry. The path to the relevant DLL is
in
HKLM\software\microsoft\exchange\client\extensions but this doesn't seem
to
change when the check-box is used. I think it also gets stored in
extend.dat
but I thought this just cached stuff that was in the registry anyway.

Don't know. But you could use InstallWatch (free) to take a snapshot before
making the change and then analyze afterward to see what changed in the
registry.