Dynamics Community Forum Thread Details

SSRS ERROR: There was an error while trying to deserialize parameter http://tempuri.org/:queryBuilderArgs

There was an issue we came across today where the users were not able to run any report on AX client and were getting the below error;

“The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameterhttp://tempuri.org/:queryBuilderArgs. The InnerException message was ‘Element ‘http://tempuri.org/:queryBuilderArgs’ contains data from a type that maps to the name ‘http://schemas.datacontract.org/2004/07/XppClasses:SRSQueryBuilderArgs’. The deserializer has no knowledge of any type that maps to this name. Consider using a DataContractResolver or add the type corresponding to ‘SRSQueryBuilderArgs’ to the list of known types – for example, by using the KnownTypeAttribute attribute or by adding it to the list of known types passed to DataContractSerializer.’. Please see InnerException for more details”.

Reason:
This happens quite frequently when AOS serving the reporting server crashes, or someone restart the AOS server without ending client user sessions.

Solution:

To overcome this problem and to make things straight, kindly follow the below steps;

Manually end client’s session, AX> System Admin > Users> Online user> End session.
Stop AOS.
Open SQL, Select the record from SysClientSessions, take the backup of the records just to be on a safe side.
Delete all the records from SysClientSessions table from the databse.
Restart SSRS services
Start AOS

Note : In some cases following only Step 2, 5 and 6 resolves this issue.

This should resolve your problem..