In this post, you’ll learn more about the Error ERROR_GRAPHICS_DDCCI_INVALID_MESSAGE_CHECKSUM – 0xC026258B that is returned when working with the COM-based APIs in Win32
Win32 COM Error
ERROR_GRAPHICS_DDCCI_INVALID_MESSAGE_CHECKSUM – 0xC026258B
Win32 COM Error Error Description
An error occurred because the checksum field in a DDC/CI message did not match the message’s computed checksum value. This error implies that the data was corrupted while it was being transmitted from a monitor to a computer.