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CICS TCP/IP traffic stops or hangs after upgrading to z/OS 1.13

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Your CICS Transaction Server for z/OS (CICS TS) region socket activity is hanging because TCP/IP connectivity appears to be broken after you upgrade to z/OS V1.13. CICS might be processing Web requests coming into it and then all of a sudden it just stops. There are no abends and no error messages within CICS, nothing to indicate any type of problem.

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