Recently I came across a strange error when dealing with the new Async Server + Client feature within AX 2012 R3 to support a channel database for a retail store/pos setup.
This environment had been working just fine with no errors for the past couple of months but I just noticed that none of the download/upload files were being processed by the server and client for the past couple of days. Nothing had changed in the AX, SQL or account access that pertained to this environment.
When looking in the event login I saw the following
CDX Client: Unable to communicate with server for upload. Please check username/password, server and database connections. Error Details: System.ServiceModel.Security.MessageSecurityException: An unsecured or incorrectly secured fault was received from the other party. See the inner FaultException for the fault code and detail. ---> System.ServiceModel.FaultException: Invalid username or password
--- End of inner exception stack trace ---
CDX Server: Invalid username or password
However I knew that my username/password combination was valid and my certs for the aos + cdx server were still valid.
After doing some basic troubleshooting I found that the following fixed the error on both the server + client.
Retail > Setup > Parameters > Retail scheduler parameters > Sync metadata
I then restarted the async client service + did an issreset on the async server. I am not sure the last part was necessary but restarting them forces it to try to reconnect to AX.
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