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Goals and Symptoms
When trying to start the ENS service, the error "Process not running: Please start service" is displayed.
The Windows event log may also show the following error: APMService.exe "An attempt was made to access a socket in a way forbidden by its access permissions"
Facts and Changes
APM, ENS, ENM
Causes and Fixes
Under some circumstances, the TCP port being used by the APMService.exe is already being used by something else in Windows.
Change the port ENS is using.
1. Stop all ENS services.
2. Open the file APMService.exe.config in the Event Notification Solution\EventNotificationSoution\ folder for editing in notepad.
3. Change the following line:
<add key="Port" value="63387" />
<add key="Port" value="25500" />
4. Open the file service.xml in the Event Notification Solution\OPC Logger\ folder for editing in notepad.
5. Change the following line:
<ESService Machine="127.0.0.1" Name="PLActivePagerModule" URL="tcp://127.0.0.1:63387/apm.tcp"
<ESService Machine="127.0.0.1" Name="PLActivePagerModule" URL="tcp://127.0.0.1:25500/apm.tcp"
6. Restart the ENS services.
Note: If port 25500 is also being used by Windows, a different port number may be necessary.
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