Outlook 2003 Addin fails to load for 32 bit Outlook 2010


Kevin Derhak

Hi All:

The subject pretty much sums up my issue. I have an addin built that
work on Outlook 2003 and Outlook 2007, but when try to use in Outlook
2010 it does not even show up in the addin list.

If someone could shed some light or point me to a more appropriate
news group I would appreciate it.

Thanks in advance,


Ken Slovak

The newsgroups are dead, the replacements are the forums. This one is
probably the most appropriate:

You need to supply more information.

What language is this written in? How is it being registered? Is it
registered on the Outlook 2010 machine? Are you hitting at least
OnConnection()? Is this a VSTO addin or shared or unmanaged? Is it listed as
disabled or do you have load errors?

You can post here or in the forum but you'll need to supply that information
before anyone can begin to figure things out. It could be something as
simple as not allowing a version higher than "12" if you check Outlook
version, or it could be something more.

FWIW, all of my 2003/2007 addins run without problems in 2010 32-bit code.

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