Fixing Win32 Error 0x000006BF (RPC_S_CALL_FAILED_DNE)

The error code 0x000006BF translates to RPC_S_CALL_FAILED_DNE. This error message indicates that the RPC call failed because the requested procedure or service does not exist (DNE) on the remote server.

Understanding Missing Procedure/Service:

• In RPC communication, clients call specific procedures exposed by programs or services on remote servers.
• The RPC_S_CALL_FAILED_DNE error occurs when the client attempts to call a procedure that is either not defined or unavailable on the remote server.

Reasons Behind RPC_S_CALL_FAILED_DNE:

There are a couple of reasons why you might encounter this error:

• Incorrect Procedure Name: The client code might be using an incorrect name for the remote procedure. This could be a typo, case sensitivity issue, or referencing a procedure that doesn’t exist on the server.
• Outdated Client-Side Information: The client application might be using outdated information about the available procedures on the server. This could happen if the server-side program or service has been updated and no longer offers the specific procedure.
• Missing Service: In some cases, the entire program or service that exposes the remote procedures might not be running or installed on the server.

Resolving RPC_S_CALL_FAILED_DNE:

1. Verify Procedure Name:

   • Double-check the name of the procedure you’re trying to call. Ensure it matches exactly with the name exposed by the server-side program or service.

2. Consult Program Documentation:

   • Refer to the documentation for the program or service you’re trying to access remotely. It should provide the correct names of available procedures.

3. Server-Side Verification (if possible):

   • If you have access to the server or can communicate with the server administrator, verify if the specific procedure is indeed available on the server.

4. Update Client-Side Information (if applicable):

   • In some cases, the client application might require an update to reflect the latest available procedures on the server. Consult software updates or documentation for the client-side program.

5. Ensure Service is Running (if applicable):

   • If the issue is related to a missing service on the server, verify if the program or service that exposes the remote procedures is running on the server.

6. Software Vendor Support:

   • If the issue persists, consider contacting the software vendor’s support for the program or service. They might have insights into specific procedures or service requirements.

Additional Tips:

• Some RPC development tools might offer features to help with procedure discovery on remote servers. These tools can help verify if the desired procedure exists on the server.
• Consider using debuggers or logging mechanisms to capture the exact procedure name being used in the RPC call on the client side, ensuring it matches server-side definitions.

By understanding the meaning of RPC_S_CALL_FAILED_DNE and the reasons behind a missing procedure or service, you can identify the cause of the issue. Verifying the procedure name, consulting program documentation, verifying with the server administrator (if possible), updating client-side information (if applicable), ensuring the service is running (if applicable), contacting software vendor support, and utilizing RPC development tools for procedure discovery can help address this error.