>>>Hi experts,
>>>
>>>Linked server not working in release mode(After deployment in IIS) but it working in source.
>>
>>A bit more detail would help :-]
>>What errors are you getting.
>>
>>IAC, it's almost certainly a security issue. Does the account inder which the AppPool is running have the right permission on the linked server ?
>
>All settings (MSDTC,IIS Permission, AppPool) are OK but error show
>"the operation could not be performed because ole db provider "sqlncli10" for linked server "servername" was unable to begin a distributed transaction"

If you are sure that the DTC is setup OK in Component Services then it could be a firewall issue. Maybe check that DTC is enabled in the firewall rules ?