MSExchangeSA 9391

  • Article

 

This article provides an explanation and possible resolutions for a specific Exchange event. If you don't find what you’re looking for here, try searching Exchange 2010 Help.

Details

Product Name

Exchange

Product Version

14.0

Event ID

9391

Category

Error

Symbolic Name

evtOALFailedToReadManifest

Message Text

OALGen failed to read the OAB version 4 manifest from folder '%1'.

Explanation

Event error ID 9391 indicates that the OAB version 4 manifest file is corrupted or has been tampered with.

User Action

If the OAB was accidentally deleted or to resolve error event 9391, do one or more of the following:

  • If daily backups are available, restore the content of the OABGen folder to the <ExchangeInstallDir> \ExchangeOAB\ <OAB GUID> folder (where <ExchangeInstallDir> is a placeholder for the Exchange 2010 installation directory and <OAB GUID> is a placeholder for the name of the folder).

  • If the corrupted OAB item is enabled for public folder distribution and the data has been published to public folders before the OAB item was corrupted, you can delete the contents of the OABGen folder from the <ExchangeInstallDir> \ExchangeOAB\ <OAB GUID> folder and rebuild the OAB files by updating the OAB. For more information about how to update the OAB, see Update the Offline Address Book.

  • If neither daily backups nor public folder distribution is enabled, delete the contents of the OABGen folder from <ExchangeInstallDir> \ExchangeOAB\ <OAB GUID>, and then rebuild the OAB files by running the following command in the Exchange Management Shell:

    Update-OfflineAddressBook <OABGuid>

    Important

    This procedure causes a full OAB download by all clients. A full OAB download can cause considerable network traffic between Client Access servers and clients.

For More Information

If you are not already doing so, consider running the Exchange tools, which have been created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues and improve mail flow. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.