Errors have been detected in your .ost file in Outlook
Original KB number: 3186812
In Microsoft Outlook 2013 or later versions, you receive the following error message:
Errors have been detected in the file C:\Users<name>\AppData\Local\Microsoft\Outlook\firstname.lastname@example.org
When you examine the application event log, you find an event with ID 2000.
Corruption is detected in your offline Outlook Data File (
To resolve this issue, delete your
.ost file and that you let Outlook redownload the information from the server that is running Microsoft Exchange Server.
Browse to the following location:
.ostfile that the error message reported to have errors, and then delete it.
In earlier versions of Outlook, we previously recommended that you use the Scanost.exe tool for errors that occur with your offline Outlook Data File (
.ost). The Scanost.exe tool is no longer available starting in Outlook 2010. We now recommend that you delete your offline Outlook Data File (
.ost) and that you let Outlook redownload the information from the server that is running Exchange Server.
You can use the following steps to review the Application event log:
- In Control Panel, open Administrative Tools.
- Double-click Event Viewer.
- In the left pane, select Application under Windows Logs.
- In the Actions pane, select Filter Current Log.
- In the Filter Current Log dialog box, enter 2000 and then select OK.