Thanks for sharing your question. Since we do not offer Windows on any of our servers this might not be the best place to find assistance with an issue on Windows.

That being said, I also was unable to find anything on your specific scenario in some searching but you may be able to gather more information from the “Event Viewer” in windows. This tool acts as a central logging location for Windows and many MS applications. This guide will walk you through the process. Hopefully you’ll find a more verbose error message there that can lead you to a solution.

For any issues related Microsoft Office product and services contact Microsoft Support and get help by experts immediately. This guide will walk you on how to open ost files.