Configure RPC dynamic port through Firewall via Registry
When selecting a range for RPC dynamic port make sure Windows and major Microsoft products do not use these ports. Since we are going to modify the Registry, make sure to create a system restore point, take a backup of the Registry. Then, you can restore the registry if a problem occurs. Type regedit in the Run prompt, and hit Enter. It will open the Registry editor. Now navigate to: Right click on RPC, and create a new KEY (folder) “Internet,” followed by the specified data types:
Name: Ports | Type: Multi-String Value (REG_MULTI_SZ)Name: PortsInternetAvailable | Type: String (REG_SZ)Name: UseInternetPorts | Type: String(REG_SZ)
Close REGEDIT.
What do these RPC Registry keys mean?
Always remember that when you have a server which is high on traffic, the availability of the ports might be tough. When setting up a range, still consider this. The Endpoint Mapper Service register these ports. If they are not registered, you may receive a configuration error – 87 (0x57) ERROR_INVALID_PARAMETER. Post this, make sure that everything is working fine. Then add these ports to the client Firewall settings, so they are not blocked. Its easy to configure RPC dynamic port, and they make sure these ports are clear from Firewall restriction. That way client machines will not have any problem connecting to server and applications. Read next: How to troubleshoot Remote Procedure Call errors.
