What does HRESULT 0xC0262587 (ERROR_GRAPHICS_MCA_INVALID_CAPABILITIES_STRING) mean?

Status / error code:

Category:

Constant name:

Source:

Facility:

Operating System:

Description:

The monitor capabilities string is not valid DDC/CI/MCCS syntax and cannot be parsed.

Previous	Next
ERROR_GRAPHICS_DDCCI_MONITOR_RETURNED_INVALID_TIMING_STATUS_BYTE	ERROR_GRAPHICS_MCA_INTERNAL_ERROR

ERROR_GRAPHICS_MCA_INVALID_CAPABILITIES_STRING

The capabilities string is a structured monitor declaration

ERROR_GRAPHICS_MCA_INVALID_CAPABILITIES_STRING means the text returned by the monitor does not follow the expected parenthesized DDC/CI capabilities grammar. The string can declare protocol type, model, supported commands, VCP codes with legal values, and an mccs_ver token; malformed nesting or token syntax prevents trustworthy feature discovery.

Retain the unmodified string and the exact byte length, including its terminator. Determine whether retrieval itself was truncated before blaming the parser. A monitor may still answer individual VCP requests despite a bad capabilities declaration, but software should not invent support from an unparseable list. Compare the raw value with a known-good unit of the same firmware revision.

Capabilities-string validation points

Balanced parentheses and complete top-level capability groups.
Declared buffer length versus bytes actually returned.
Raw vcp and mccs_ver tokens.
Differences between monitor firmware revisions or input ports.

References

Looking for a different code? Search another status or error code.