verify that the host account for the biztalk adapter for mqseries adapter is added to the role that was created in the mqsagent com+ applcation or in the mqsagent2 com+ application on the Mqseries server.
Verify this in the component services.
Ok, if I open component services, where shoud I look?
After you opened Component Services, perform the following:
– expand 'Component Services', 'Computers', 'My Computer', 'COM+ Applications', 'MQSAgent2', 'Roles', 'CreatorOwner', 'Users' – check if the user running the Host Instance for the MQ Series adapter is added
if it is not, right-click 'Users' and choose New/User from the context menu