| Event Id | 21147 |
| Source | Microsoft Firewall |
| Description | Microsoft ISA Server SMTP Message Screener failed to start. Reason: The SMTP Message Screener could not read the registry configuration (error code %1). |
| Event Information | According to Microsoft Cause: The ISA Server SMTP Message Screener could not read the registry configuration. Resolution: Verify that the Message Screener filter has access to the registry by looking at the security event log and verify that the registry is configured correctly. |
| Reference Links | Event Id:21147 Source Id:Microsoft Firewall |
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