When many clients connect to the Microsoft BitLocker Administration and Monitoring 2.5 recovery databases, SQL deadlocks may occur in the database. Therefore, keys cannot be recovered from the Helpdesk Portal or Self Service Portal. New clients receive errors when they try to encrypt as the MBAM service becomes unreachable. This causes timeouts and other errors.
Additionally, the following errors occur in the MBAM svc trace logs under c:\inetpub\Microsoft BitLocker Management Solution\Logs\Recovery and Hardware Service\*.svclogs:
Transaction (Process ID 63) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. Uncommittable transaction is detected at the end of the batch. The transaction is rolled back.