BBacskay is correct, this is related to the TcpIpBase Lib. Error 9517 means that the mailbox (receive queue) to Qcd_L3_007_003.exe is full. This might happen if the exe has crashed or is blocked.
Please check if there are any errors related to the tcp/ip library in the eventlog. You could also check if all Qcd_L3_007_003.exe instances are still running.
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