| Event Id | 20060 |
| Source | Microsoft ISA Server Report Generator |
| Description | Listening for Q.931 connections failed. Some other process is probably listening on port 1720. The service cannot start. |
| Event Information | According to Microsoft Cause: The required port may be in use by a different application. Resolution: Close any application that may be using this port, then try to restart the service. |
| Reference Links | Event Id:20060 Source Id:Microsoft ISA Server Report Generator |
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