c# - WCF - The remote endpoint no longer recognizes this sequence -


i having strange issue calling method on wcf. web , service code made through development, working fine on local developer machines , qa server. when published uat server windows service returned:

the remote endpoint no longer recognizes sequence. due abort on remote endpoint. value of wsrm:identifier not known sequence identifier. reliable session faulted.

the methods worked fine, built transport objects database calls threw exception when returning object.

there similar question same error, none of suggested solutions applied. exact same code worked fine on machines threw exception when installed on server.

i'm still not sure why, cause of behaviour interface returned method had ienumerable<> property. replacing list<> resolved issue.

i'd love know why worked on every other machine tried on not uat server.

the .net versions installed on both identical.

the difference can see different operating systems.

it worked fine on: windows server 2008 r2 enterprise, windows 7 enterprise

it threw exception on: windows server 2008 r2 datacenter.

edit: although solved issue, i'd love answer explained why ienumerable<> work on every machine ran on, crashed on uat machine.


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