| Event Id | 20060 |
| Source | Microsoft ISA Server Job Scheduler |
| 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. SOLUTION : Close any application that may be using this port, then try to restart the service. |
| Reference Links | Event ID: 20060 Of Source ID:Microsoft ISA Server Job Scheduler |
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