Symptoms

Exchange backups with the following error in the PPDM agent log: msagentsv_cent_20230808144755_TRACE_ID9ef87cd4648ad2f0;EXEC_ID81fd3f24f36cea16.log: 2023-08-08T13:48:10.834Z [TRACE_ID:9ef87cd4648ad2f0;EXEC_ID:81fd3f24f36cea16]130344 msagentsv PowerProtect Data Manager info Processing Exchange writer name 'Microsoft Exchange Writer', instance name 'Exchange Replication Service' writer. msagentsv_cent_20230808144755_TRACE_ID9ef87cd4648ad2f0;EXEC_ID81fd3f24f36cea16.log: 2023-08-08T13:48:15.302Z [TRACE_ID:9ef87cd4648ad2f0;EXEC_ID:81fd3f24f36cea16] Driver not active for volume \\?\Volume{00d86d0d-0616-49d9-b04e-d0ecbbfffb8a}\ msagentsv_cent_20230808144755_TRACE_ID9ef87cd4648ad2f0;EXEC_ID81fd3f24f36cea16.log: 2023-08-08T13:48:15.302Z [TRACE_ID:9ef87cd4648ad2f0;EXEC_ID:81fd3f24f36cea16] 95958:msagentsv: Cannot initialize the write tracker. The following command shows that the nsrbbb service is in a stopped state. It is run on the Exchange Management Shell: PS C:\Get-Service nsrbbb Status Name DisplayName ------ ---- ----------- Stopped nsrbbb BBB Write Interceptor Driver The following error is present in the System Event Logs on the Exchange server: Log Name: System Source: Service Control Manager Date: Event ID: 7000 Task Category: None Level: Error Keywords: Classic User: N/A Computer: Description: The BBB Write Interceptor Driver service failed to start due to the following error: BBB Write Interceptor Driver is not a valid Win32 application

Cause

The security feature on the server prevented the third party driver to load into the memory.

Resolution

Disable Windows integrity on the nodes from the Windows security tab. If the feature is enabled through GPO, exclude exchange servers out of the GPO.https://learn.microsoft.com/en-us/windows/security/hardware-security/enable-virtualization-based-protection-of-code-integrity

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