Then click on file options and select Account setting from the right side.Ģ. It important to protect your Outlook data file by set password on OST file by this no one can access your important data. When you would cancel the password prompt, MS Outlook will still grant you access to the already cached data on your machine. When you configure your Microsoft Exchange account in some cases to always asked for an Outlook password or you never select the option to remember your Outlook password, it only applies to the connection to the MS Exchange server. Encrypt OST file by set password on Outlook OST file by file level encryption method. MS Outlook now uses more than a personal to the professional way and in this time OST file security is matters. Outlook OST File Security to Prevent Unauthorized Access The Best way to encrypt Outlook data file by set password on OST file by manual file level encryption method. But you can choose file level encryption method or you can change your OST default file directory to an encrypted disk. MS Outlook 2007, 2010, 20, there is no build-in encryption for the Outlook OST file. We are looking for a way secure the Outlook OST file so that no one can access historical or important data that is already downloaded on the OST file.” “My Organization allows employees to setup emails (MS Exchange server) on their personal laptops.