TIP: Run a Free Scan for .OST File Errors.
Files with the extension
.OST are known as "
Microsoft Exchange/Outlook Offline File".
This file format was added to our database by a visitor to this site, but no additional information was provided.
We have yet to investigate the OST file extension any further, or there was simply not enough information available at the time to report accurately on the format. If you know how to open OST files or even how to convert or edit them, please use the form below.
However, it is possible that other file formats exist which also use the
OST extension, so please
let us know if you do not think the OST extension matches the file format you are looking for.
 Windows |
|
Additional extension information
| File type: |
Not specified |
| Popularity: |
 Average |
| Author: |
Microsoft |
| MIME type: | Not specified |
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