FACILITY_WEB_SOCKET

• 0x83760001: Invalid operation performed by the protocol.^[1]
• 0x83760002: Invalid data format for the specific protocol operation.^[1]
• 0x83760003: Protocol extensions are not supported.^[1]
• 0x83760004: Subrotocol is not supported.^[1]
• 0x83760005: Incorrect protocol version.^[1]

Sources

1. winerror.h from Windows SDK 10.0.14393.0