Try asking in an Exchange group since OoO is a server side action.

--�
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, matchbox asked:

| Please can someone help me with how the out of office assistant
| triggers the "do you want to turn of OOF" when you first log in to
| outlook. Is it triggered by exchange or the outlook client?
|
| We have an issue when some users are not prompted to turn the oof off
| once they return to the office. this is not a consistent error and i'm
| trying to establish possible causes.
|
| Thanks in advance