In this post, you’ll learn more about the Error WS_E_ENDPOINT_TOO_BUSY – 0x803D0012 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
WS_E_ENDPOINT_TOO_BUSY – 0x803D0012
Win32 COM Error Error Description
The remote endpoint is unable to process the request due to being overloaded.