Knowledge

ERROR_MCA_MCCS_VERSION_MISMATCH - 15203 (0x3B63)

The MCCS version in a monitor's mccs_ver capability does not match the MCCS version the monitor reports when the VCP Version (0xDF) VCP code is used.

Updated: Feb 21, 2026

Technical Background

The ERROR_MCA_MCCS_VERSION_MISMATCH error code, with the numeric value 15203 and hexadecimal representation 0x3B63, indicates a version mismatch between the Monitor Control and Configuration Service (MCCS) version in a monitor's capability and the version reported by the VCP Version (0xDF) code. This error is typically encountered during the negotiation of video control protocol (VCP) versions between a display adapter driver and a monitor.

Error Details

The MCCS is a service that provides a standardized interface for controlling monitors, allowing for consistent behavior across different hardware implementations. The VCP Version (0xDF) code is used to query the version number of the VCP supported by the monitor. If the version numbers do not match, this error is generated.

Common Causes

  • Invalid parameter values: Incorrect or unsupported parameters passed during the negotiation process.
  • Incorrect object type: The operation context may involve an incorrect object type, such as attempting to apply a capability intended for one type of monitor to another.
  • Exceeding limits: The version numbers might exceed supported ranges defined by the system or hardware specifications.

Real-World Context

This error typically occurs during the initialization phase of a display adapter driver when it attempts to establish communication with a monitor. It can affect the proper functioning of video output and may result in display issues such as no signal, incorrect resolution settings, or other visual anomalies.

Is This Error Critical?

The criticality of this error depends on the specific context. While it does not directly impact system stability, it can lead to suboptimal performance or functionality if left unresolved. It is advisable to address this issue promptly to ensure proper display operation.

How to Diagnose

  1. Review Operation Context: Verify that the driver and monitor are compatible with each other in terms of MCCS and VCP versions.
  2. Validate Parameters: Ensure that all parameters passed during the negotiation process are correct and within supported ranges.
  3. Confirm Object Types: Confirm that the operation context involves the correct type of monitor and display adapter.
  4. Verify Input Data: Check for any corrupted or invalid data that might be affecting the version negotiation.

How to Resolve

  1. Correct Parameter Usage: Ensure all parameters are correctly set according to the specifications of both the driver and the monitor.
  2. Adjust Operation Context: If necessary, adjust the operation context to ensure compatibility between the driver and monitor.
  3. Restore Data: If data corruption is suspected, restore or reinitialize any relevant settings.
  4. Retry Operation with Valid Inputs: Attempt to retry the operation using valid inputs to see if the issue resolves itself.

Developer Notes

Developers should be aware of the version compatibility requirements between drivers and monitors when implementing video control protocols. Ensuring that all components are up-to-date and correctly configured can help prevent such errors from occurring.

Related Errors

  • ERROR_MCA_MONITOR_NOT_FOUND
  • ERROR_MCA_VCP_VERSION_MISMATCH
  • ERROR_MCA_INVALID_CAPABILITY

FAQ

Q: What does the ERROR_MCA_MCCS_VERSION_MISMATCH error indicate?

A: It indicates a version mismatch between the MCCS version in a monitor's capability and the version reported by the VCP Version (0xDF) code.

Q: How can I troubleshoot this issue?

A: Review the operation context, validate parameters, confirm object types, and verify input data. Adjusting these factors may resolve the error.

Q: Is this error critical for system stability?

A: While it does not directly impact system stability, it can lead to suboptimal display functionality. It is advisable to address the issue promptly.

Summary

The ERROR_MCA_MCCS_VERSION_MISMATCH error code indicates a version mismatch between the MCCS and VCP versions during monitor initialization. This error can be caused by invalid parameters, incorrect object types, or exceeding supported limits. Proper diagnosis and resolution involve reviewing operation context, validating parameters, confirming object types, and verifying input data. Ensuring compatibility between drivers and monitors is crucial to prevent such errors.