Fixing Win32 Error 0x000006BC (RPC_S_INVALID_NETWORK_OPTIONS)

The error code 0x000006BC translates to RPC_S_INVALID_NETWORK_OPTIONS. This error message indicates that the RPC system encountered invalid or incompatible network options specified in the binding string or configuration for the RPC connection.

Understanding Invalid Network Options:

• In RPC communication, the binding string defines various parameters for the connection, including network options. These options can influence aspects like security, performance, or network behavior.
• The RPC_S_INVALID_NETWORK_OPTIONS error occurs when the specified network options are either invalid (not recognized by the system) or incompatible with the server configuration or network environment.

Reasons Behind RPC_S_INVALID_NETWORK_OPTIONS:

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

• Incorrect Network Option Values: The binding string might contain typos or incorrect values for specific network options.
• Unsupported Network Options: The network options specified might not be supported by the client or server operating system, network configuration, or RPC implementation.
• Conflicting Network Options: In some cases, a combination of multiple network options within the binding string might be conflicting or incompatible.

Resolving RPC_S_INVALID_NETWORK_OPTIONS:

1. Verify Network Option Configuration:

   • Carefully examine the network options specified in the binding string. Ensure the option names and values are accurate and valid for the chosen RPC protocol and environment.

2. Consult Program Documentation:

   • Refer to the documentation for the program or service you’re trying to access remotely. It might specify supported network options for RPC connections.

3. Software Vendor Support:

   • If you’re unsure about the appropriate network options or encounter issues related to server configuration, consider reaching out to the software vendor’s support for the program or service you’re trying to access remotely. They can provide guidance on compatible network options.

4. Review System Network Configuration (if applicable):

   • In some cases, network options might be restricted by system-wide network configurations. Investigate if specific network options are disabled or unsupported on the client or server machine.

5. Simplify Network Options (if possible):

   • Try simplifying the binding string by removing unnecessary or unsupported network options. This can help isolate if a specific option is causing the issue.

6. Use RPC Configuration Tools (if applicable):

   • Some RPC development environments or tools might offer functionalities to help validate or generate binding strings with appropriate network options based on the target program or service.

Additional Tips:

• Consider searching for the specific network option names you’re using in RPC documentation or online resources to understand their purpose and valid value ranges.
• If managing the client or server configuration, ensure network options specified in the binding string are compatible with the underlying network infrastructure and security policies.

By understanding the role of network options in RPC and the reasons behind the RPC_S_INVALID_NETWORK_OPTIONS error, you can identify the cause of the invalid or incompatible network options. Carefully verifying network option configuration, consulting program documentation, contacting software vendor support, reviewing system network configuration (if applicable), simplifying network options (if possible), using RPC configuration tools (if applicable), and understanding the meaning of specific network options can help address this error.