We are test running "GroupWise" for the alternative calendar sharing, as
suggested by Microsoft.  Every once in a while, when I attempt to bring up
the "Groupwise" shared calendar, I get the error "It is illegal to call out
while inside a message filter".  There doesn't seem to be any way around it,
so I end up closing and reopening Outlook.  Then I can access the calendar
without issues (until it comes up again).  This message is sporadic and
doesn't seem to be triggered by anything.

Has anyone else run across this?

thanks

Jennifer