File Extension OST

File type: Outlook Offline Folder File

About the OST file type:

If Windows cannot find the appropriate program associated with .OST files, then your registry may have errors. Check your Windows registry for errors (includes file association errors).

The file is commonly used as the email message file. This file stores the offline data of the email. This is used by the email software to store the mail data and other information. This supports large files and the same is created when "Use Offline Folders" option is selected in Outlook and he mails are stored on the local hard drive of the computer. This file stores the complete mails on the computer and the same can be displayed any time when the user opens the software without access to the internet


Detailed information for file extension OST

Category: Misc Files - This file stores the email messages which are saved by the Microsoft Outlook program on hard disk
File format: Proprietary
Open with Windows: This file can be opened with Microsoft Outlook 2005 or later, Microsoft Outlook OST Integrity Tool and Outlook Recovery Box
Open with Linux: N.A.
The .OST file is the Outlook Offline Folder file and shall store the email messages and other data saved by Microsoft Outlook