Create an Offline Folder file (.ost)

1. On the Tools menu, click E-Mail Accounts, click View or change existing e-mail accounts, and then click Next.
2. In the Outlook processes e-mail for these accounts in the following order list, click Microsoft Exchange Server, and then click Change.
3. Click More Settings.
4. Click the Advanced tab, and then click Offline Folder File Settings.
5. In the File box, type the path to the file you want to use as the Offline Folder file.

   The default file name is outlook.ost. If this file already exists, you are prompted for a new name.