SNA Server Application Exception If Invalid Handle

• Microsoft SNA Server version 2.11 Service Pack 1 (SP1)

SYMPTOMS

An access violation may occur when you run SNA Server 2.11 or 2.11 SP1 on Windows NT 3.51 or 4.0, if the Windows NT "global flags" entry is enabled to check for "invalid handle exceptions."

This problem is only observed in special debugging environments where "invalid handle exceptions" have been enabled by a Windows NT support engineer.

CAUSE

A service handle returned either by OpenSCManager() or OpenService() function must be closed with CloseServiceHandle() NOT with CloseHandle(). Calling CloseHandle will generate an exception if "invalid handle exceptions" are enabled.

RESOLUTION

Close all service handles with the CloseServiceHandle() call.

STATUS

Microsoft has confirmed this to be a problem in SNA Server version 2.11 Service Pack 1 (SP1). A supported fix is now available, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Product Support Services for more information.