> Hello,
>
> We have recently developed a simple add-in for Outlook developed in VSTO
> for
> a number of our users, but with a few of the users, the add-in simply
> doesn't
> load.
>
> Currently, we have a setup package that installs the necessary keys in
> HKLM
> and the necessary FullTrust code group in My_Computer_Zone. The add-in
> creates a simple 2-button toolbar in Outlook. We tested the add-in on a
> number of machines before pushing it, and it worked on all of them. After
> pushing to approximately 30 users, however, we found that add-in toolbar
> did
> not appear for several people (at least 4-5 that we are aware of).
>
> Here’s where we are stuck: we attempted to fix the issue by installing the
> add-in manually for each user. After installation, the add-in works as
> expected under the Administrator account used for installation. If we log
> on
> to a test account which has normal user permissions, the add-in also
> appears
> as it should. However, when the computer’s main user attempts to load the
> add-in, it still doesn’t load. We’ve tried completely uninstalling and
> reinstalling to no avail. We’ve also tried logging to a file when the
> add-in
> loads, but even this entry doesn’t show up, so it seems there must be some
> setting/program on the user’s account which prevents the add-in from even
> beginning the load process.
>
> Our initial reaction was that VSTO or some other necessary dependencies
> didn’t exist on the users’ computers, but the fact that the add-in works
> on
> all accounts except for a single user has killed that theory. What could
> be
> the cause of this?
>
> Thanks,
> Brian