IBM Support

IT37968: MQ 9.2.4 client connecting to a queue manager via MQ IPT fails with AMQ9296E: Password protection negotiation failed.

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APAR status

  • Closed as program error.

Error description

  • An IBM MQ 9.2.4 client connecting to a queue manager via one or
more MQ Internet Passthru (MQ IPT) instances fails to connect.
The client error log reports:

AMQ9296E: Password protection negotiation failed.

Local fix

  • 



Problem summary


    

  • ****************************************************************
USERS AFFECTED:
Users connecting an MQ 9.2.4 client to a queue manager via an MQ
IPT instance.


Platforms affected:
MultiPlatform

****************************************************************
PROBLEM DESCRIPTION:
Version 9.2.4 of the MQ client incremented the internal MQ
client protocol version to a version higher than the level
supported by existing versions of MQ IPT. This exposed a logic
error whereby the protocol version detection logic in MQ IPT
would transmit an invalid protocol flow to the queue manager, if
the client's protocol version was higher than the maximum
protocol version understood by MQ IPT. This cause the connection
attempt to fail before the authentication phase, which was
reported back to the client with an AMQ9296E message.

    



Problem conclusion


    

  • MQ IPT has been updated to correctly detect protocol versions
higher than its own, and adjust the protocol version of the
connection accordingly.

---------------------------------------------------------------
The fix is targeted for delivery in the following PTFs:

Version    Maintenance Level
v9.2 LTS   9.2.0.4
v9.x CD    9.2.5

The latest available maintenance can be obtained from
'WebSphere MQ Recommended Fixes'
http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037

If the maintenance level is not yet available information on
its planned availability can be found in 'WebSphere MQ
Planned Maintenance Release Dates'
http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
---------------------------------------------------------------

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IT37968
    • 

  • Reported component name
    MQ BASE V9.2
    • 

  • Reported component ID
    5724H7281
    • 

  • Reported release
    920
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2021-08-11
    • 

  • Closed date
    2021-11-05
    • 

  • Last modified date
    2021-11-05
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    • 



Fix information


    

  • Fixed component name
    MQ BASE V9.2
    • 

  • Fixed component ID
    5724H7281
    • 



Applicable component levels


    








      
              
                            

              

              [{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"920"}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            06 November 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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