Backlog Growing after Executing EPCB-22284_BacklogHotfix Scripts

Products

• Carbon Black App Control

Issue/Introduction

After running the scripts for the Server 8.10.4 & 8.11.0 Backlog Hotfix, Backlog starts to grow again.

Environment

• Carbon Black App Control: 8.11.2 or higher

Cause

• The Backlog Hotfix (EPCB-22284) was designed for execution against Server 8.10.4 and 8.11.0.
• The permanent fix was included as part of the Server 8.11.2 release, and executing the Hotfix breaks Backlog processing.

Resolution

1. Run SQL Server Management Studio as the Carbon Black Service Account
2. Run this command to validate the schema 

   use das
   EXEC dbo.ValidateSchema

3. Validate the output includes similar discrepancies before continuing.

   Schema 8.11.2.104 from Nov  6 2025  7:29PM is not valid. Discovered discrepancies in database schema.
   
   Missing or modified at least 6 required object(s) from database schema:
   P.CreateAllDefaultRulesFromXml.[0(0)]
   P.CreateDefaultUpdaters.[0(0)]
   P.OnFileCreationOrModification.[0(0)]
   P.ProcessFileInstancesForHost.[0(0)]
   P.UpdateYaraRuleTagSet.[0(0)]
   P.UpdateYaraRuleTagSetForInstance.[0(0)]

4. Open a case with Support, reference this article and request the script to revert the Backlog Hotfix.

Additional Information

• Schema Validation will cache discrepancies. After running the BacklogProcessingRevert_8_11_2 script, ValidateSchema will still return similar errors. These can be ignored as long as the Backlog is still processing.