You receive the AssemblyUnloadFinished notification before the AssemblyLoadFinished notification

You may receive the AssemblyUnLoadFinished notification before you first receive the AssemblyLoadFinished notification.

When the Common Language Runtime(CLR) service attempts to load an assembly, the profiler receives the AssemblyLoadStarted notification. However, it is possible for the CLR to abort the loading process before the process is finished. In that case, the profiler receives the AssemblyUnloadStarted and AssemblyUnloadFinished notifications before it receives the AssemblyLoadFinished notification.

To resolve this issue, make sure that the profiler is able to detect the situation described in the "Cause" section of this article and, therefore, infer that the loading of the assembly has been aborted.

This behavior is by design.

For additional information on CLR profiling, click the article number below to view the article in the Microsoft Knowledge Base: