Check the following articles in order to troubleshoot connectivity problems:
- M839880 - Shows how to troubleshoot RPC Endpoint Mapper errors.
- M832017 - Provides information on Service overview and network port requirements for the Windows Server system.
- M280132 - Contains information on Exchange 2000 Windows 2000 connectivity through firewalls.
See the links below for more details on the error.
As per Microsoft, in a distributed (RPC) application, the client called a server endpoint but no server had registered that endpoint. The recommended action is to make sure the server is started.
The fact that the RPC application cannot access the server doesn't necessarely mean that the server is down but it could also mean that the application cannot access the server due to connectivity problems. These problems could mean faulty networks or firewalls that block RPC traffic.
Symbolic name: EPT_S_NOT_REGISTERED
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