Event 40966 - Permission synchronization error when deleting or moving a folder


After deleting or moving a folder with an associated archive subsequent synchronization runs can report an error to the event logs, Event 40966.

Error Message

Event 40966
Exception: External component has thrown an exception.
Type: System.Runtime.InteropServices.SEHException
Command Line: "C:\Program Files\Enterprise Vault\EvFsaSyncTask.exe"

To validate if this is the issue a Dtrace is needed, please perform the following steps on the EV server that has generated Event ID 40966 while re-creating the issue.

  • For more information about Symantec Enterprise Vault’s Dtrace Utility please see HOWTO57893.
  • Dtrace the process EVFsaSynchTask for no less than 5 minutes while re-creating the issue.
  • Open the log file created and search for either of the following the strings:


{FOLDER.EN_US} An error occured synchronizing permissions for folder: \\?\UNC\folder and the Archive object with id: Archive ID of the affected archive.




This issue can occur during a synchronization task attempt to bring the file system permissions to an archive. If the folder path for the archive no longer exists this error will be generated, while the Enterprise Vault server has been configured with the SynchroniseFSASharePermissions registry key set to 0




1. Using Dtrace during the synchronization will provide the details of which path is causing this issue - once identified the path can be re-added to the target file system.

2. Switch the SynchroniseFSASharePermissions registry key back to 1 - see TECH55846.

3. Contact Technical Support to remove the volume target association for the archive from the EnterpriseVaultDirectory


To permanently resolve this issue apply Enterprise Vault 11.0.1 Cumulative Hotfix 3 Release .

Or upgrade to Enterprise Vault 12.0.0 or later.


Terms of use for this information are found in Legal Notices.



Did this article answer your question or resolve your issue?


Did this article save you the trouble of contacting technical support?


How can we make this article more helpful?

Email Address (Optional)