Can i use outlook without having a .ost file at all?

Question

Im in a bit of a pickle. At my office we are working with about 100-150 computers. At the moment all of them are using cached exchange mode and creating a local .ost file when logging in on a new computer.

However there are a few guest/shared computers which we want to not create a local .ost file on them when loging in and opening outlook. Is there a way to prevent outlook from creating an .ost file and going directly to online mode? Perhaps in windows regestry? regedit

Solution

You can turn off Cached Exchange Mode in Outlook settings:

http://office.microsoft.com/en-001/outlook-help/turn-on-or-off-cached-exchange-mode-HP010355560.aspx