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I saw a few cases where I am suspecting some AV is blocking FilterLoad. I cannot easily test if StartService works here, nor what AVs are installed (it will take several weeks to do so).
FilterLoad returns "Privilege not held", even though SE_LOAD_DRIVER is enabled. Since the drivers can be installed, I am suspecting it might be some AV that blocks a driver load? One/two cases having random user->privilege assignments I can figure, but there are a lot more cases.
Anyone have other ideas?
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