+ Start a Discussion
Ralph MillerRalph Miller 

How to Fix "Errors have been detected in the .OST file" in Outlook?

ost file error
Due to corruption in Outlook offline OST files, Microsoft Outlook users generally get an error message
Errors have been detected in the file C:\Users\\AppData\Local\Microsoft\Outlook\.ost”
And because of this error users are unable to open Outlook app and access emails and other data.

To fix this error you can use SCANPST.exe (Inbox Repair Tool) available in Outlook installation folder to repair the OST file and after the successful repair, you can try to open the MS Outlook and check if the error is fixed or not.
(You can locate the OST file here: C:\Users\\AppData\Local\Microsoft\Outlook\email.ost)

If you are still facing the same error because OST file is highly damaged and Scanpst.exe is not capable to repair the OST file. In this case, you can try vMail OST File Recovery Tool to repair the OST file. This software can easily repair corrupted OST files and recover all emails, contacts, calendars, tasks, notes, journals, etc. Next, you need to export all recovered ost file data to PST file and import the PST file MS Outlook to accessing your emails without getting any error.

Learn More- Errors have been detected in the OST file (https://www.vsoftware.org/blog/fix-error-have-been-detected-in-ost-file.html)
AbhishekAbhishek (Salesforce Developers) 
easton king78easton king78
You can also take the help of OST to PST Converter Free Tool to move data from OST to PST format with all mail and properties. This tool safely converts many other formats such as PST, EML, MSG, HTML, MHTML, MBOX without any hassle. You can also use the free demo edition and convert 10 emails from OST data into PST format for free. It can work with all versions of MS Outlook-like 97, 98, 2000, 2002, and 2003, up to 2016, 2019.

For more info:- https://www.softknoll.com/ost-to-pst-converter/