Installation On Terminal Server
By default, running the MSI will start up for a current user, however, to install to all users on the server, run the installer with these flags which will force all-user installation:
Ahau.Office.Outlook.Addin.Redmine.Setup.msi ALLUSERS=1
Or use Msiexec.exe
MSIEXEC.EXE /I Ahau.Office.Outlook.Addin.Redmine.Setup.msi ALLUSERS=1
As alternative, this is option can be chosen in the Setup Wizard