Hi @billziss-gh. Thanks for creating WinFSP! It works really well for our purposes. I am observing the same issue as previously reported in #98 with unplayable video files on my Windows 10 testing VM. I am using jnr-fuse with WinFSP. Based on the answer I think the issue is security related, but I don't see a way to configure the OpGuardStrategy to FSP_FILE_SYSTEM_OPERATION_GUARD_STRATEGY_COARSE in jnr-fuse. If I copy the video out of the fuse drive and onto my desktop the video plays fine. But while the video is in the fuse drive it loads its thumbnail but refuses to play. Media Player shows this error: 0xc00d36c4.

It would be nice to be able to pass such options as part of the fuse mount options. Similarly to how osxfuse has Mac OS X specific mount options.