Symptoms
An illegal instruction (C00000FD) exception or an access violation (C0000005) exception occurs in the Intersite Messaging service (ismserv.exe). The exception causes ismserv.exe to crash.
Resolution
This problem occurs if a function in the Adsiis.dll component leaves a released cache item in the server cache when a remote procedure call (RPC) error occurs. When a subsequent client request tries to use the released cache item, the illegal instruction exception or the access violation exception occurs.