Sometimes a lot of users in the directory have to be deleted.
To avoid a timeout during the directory synchronization process, you can define the maximum number of user deletions to do per synchronization.
In the WorkflowGen web.config file (located in the DRIVE:\Inetpub\wwwroot\wfgen folder), you can define the value of the DirectorySynchronizationMaxUserDeletionCount parameter as the number of users to delete per synchronization run.
Example
You have 10,000 entries to be delete. Set the value of DirectorySynchronizationMaxUserDeletionCount to 1000. After 10 synchronizations, all of the users will be deleted.