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| offline folder file (The file on your hard disk that contains offline folders. The offline folder file has an .ost extension. You can create it automatically when you set up Outlook, or when you first make a folder available offline) | |||
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| offline folder file (The file on your hard disk that contains offline folders. The offline folder file has an .ost extension. You can create it automatically when you set up Outlook, or when you first make a folder available offline) | |||