Источник:
http://blogs.msdn.com/b/axsupport/ar...0-minutes.aspx
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Sometime ago we run into problem when reports that executes longer than 10 minutes are running into timeout error. To overcome this problem:
- For reports printed in batch job you need to install kernel hotfix KB 2642168 - the KB article is still not published on Partner source but you should be able to get hotfix through Microsoft Dynamics AX Support team
- For reports printed on screen. You need to:
- Open configuration:
- If a configuration file has been created for reporting services according to http://technet.microsoft.com/en-us/l.../hh389774.aspx (make sure it’s in the right folder!), open that file in Microsoft Dynamics Ax Configuration Utility
- If no such configuration file has been created, open the Microsoft Dynamics Ax Configuration Utility configuration.
- On the Connection tab, select Configure Services
- Select the service binding to modify under the Bindings node (QueryServiceEndpoint in this case) and tweak the SendTimeout or ReceiveTimeout parameter as necessary. SendTimeout is the one that needs tweaking:

- Restart SQL Reporting Services and Microsoft Dynamics Ax Client
Источник:
http://blogs.msdn.com/b/axsupport/ar...0-minutes.aspx