Why can't I deploy Mail Express for "All Users" on a computer instead of one at a time?

THE INFORMATION IN THIS ARTICLE APPLIES TO:

• Mail Express, all versions

QUESTION

Why can't I deploy Mail Express for "All Users" on a computer instead of one at a time?

ANSWER

By installing at the user level, we avoid having to ask the user during installation to provide credentials as an administrator to continue, if they have inadequate permissions. Also, the default path for the “file store location” in Mail Express is within the user profile area on the file system, which is locked down via NTFS permissions only for that user. This is important because the Add-In temporarily stores information about emails and attachments that it is processing that should be secured. It is also possible that when installing the Add-In at the computer level, users would not be able to turn the Add-In on or off via the Outlook Trust Center.