| Event Id | 20004 |
| Source | Microsoft ISA Server Report Generator |
| Description | H.323 filter: failed to bind IP address %1 for listening. Future H.323 incoming calls will be refused. |
| Event Information | According to Microsoft Cause: The required port may be in use by a different application. Resolution: Verify that no other application is using the relevant H.323 ports and then retry. |
| Reference Links | Event Id:20004 Source Id:Microsoft ISA Server Report Generator |
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