Recently we met a strange issue, a request only is recorded once in the log of IIS, but it is recorded twice in our log. We can make sure this request is execute
twice. It seem it cause by an exception generate in a C++ COM component and cause IIS thread crash, then IIS re-run this request. We ever try make a memory exception, then IIS indeed execute a request twice, it prove our
conclusion. , But this is not expected. We hope it only be execute once whenever any exception. Who knows how to do it?