Did you find or received OST file and your computer failed to open it? Below we will explain what is OST file extension and how you can open it.
The .OST file extension identifies an Outlook Offline Folder File which may sometimes also be called an "Exchange Offline File." This file will be used to cache your e-mails offline locally on your computer when connected to a corporate e-mail server.
In most cases your computer should know what software program should be used to open different file types and extensions like OST. When you double click on the OST file format, it should open with appropriate software program. If you downloaded or received OST files for the first time and your system failed to open it then try free file viewers available on the internet after doing enough research not to fall prey to malware.
Finally, if Windows is unable to open file extension OST you may have registry related errors or may not have the appropriate program installed. We strongly recommend that you run a registry scan.
You are currently viewing the detail page for OST file ext. This page contains a detailed description of the OST file type, software tools to help resolve file association errors in the Windows registry together with relevant system utility applications and other related information.