| Event Id | 21147 |
| Source | ISA Server RPC Filter |
| 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 SOLUTION : 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 of Source : ISA Server RPC Filter |
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