User Profile Synchronization Service unexpected failure - Events 6300-6309 (SharePoint Server 2010)
Applies to: SharePoint Server 2010
Topic Last Modified: 2010-03-16
Alert Name: User Profile Synchronization Service unexpected failure
Event ID: 6300-6309
Summary: The User Profile Synchronization service has experienced a generic, unexpected failure.
Symptoms: One or more of the following events appear in the event log: Event ID: 6300-6309 For the description, see the event details.
Cause: There can be multiple causes, but primarily these events indicate connectivity failures with the User Profile Synchronization service — for example, the SharePoint farm failed to connect to the database for the instance of SQL Server.Resolution: Verify that the database server is running and available
On the database server, in the Services snap-in, verify that the SQL Server (MSSQLSERVER) service is running.
Log on to Microsoft SQL Server Management Studio as the account provided in the error details, click Connect, and then click Database Engine.
Type the server name provided in the error details, and then click Connect.
On the Central Administration Home page, click Security, and then click Service Applications.
On the Security page, in the General Security section, click Configure service accounts.
On the Service Accounts page, in the service account drop-down list, click Farm Account.
Verify that this account has sufficient permissions on the database server.