Interesting takeaway from [WayBack] DCOM calls from thread pool threads call CoInitialize* at the start, and call CoUninitialize*before returning. Expensive, but necessary Related: [WayBack] 123683 – CoInitialize should be called at most once per thread [WayBack] c++ – Is CoInitialize(NULL) call expensive after CoInitializeEx(NULL, COINIT_MULTITHREADED) on the same thread? – Stack Overflow [WayBack] OLE DB […]

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