I try to install an outlook addin under HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE depending on the selected installation mode (just me/everyone). So I work with User/Machine Hive in the registry editor.
The installation just for the current user works perfectly. But after selecting everyone during the installation process I can't even activate the addin in Outlook. In the trust center it is marked as inactive and trying to activate it
will result with an error: "This add-in is installed for all users on this computer, and can only be connected or disconnected by an administrator".
I'm pretty new to programming in vsto and registry stuff - I'm pretty new to programming in general :)
Any thoughts would be helpful.