.tif has no file associations and the associations box under Open With is grayed out. Attempting to associate with Microsoft Photo Editor as a majority of these are fax images created with Microsoft Fax Shared Client.
Logged in as admin on a Win2k Terminal Server running Citrix MP3. Attempted the Shift/right-click/open to no avail. Attempted to modify HKCR\.tif with various options but the program would not load so I apparently don't have the right key combination. Tried photoed and photoed\tifffile and variations of that as well.