In this post, you’ll learn more about the Windows Socket Error WSA_QOS_EPSFLOWSPEC
11027 returned by the WSAGetLastError function in Windows as well a quick description about the error
Windows Socket Error Code
WSA_QOS_EPSFLOWSPEC
11027
Windows Socket Error Description
Invalid QoS provider-specific flowspec.
An invalid or inconsistent flowspec was found in the QoS provider-specific buffer.