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  • AFAIK file shares will use SMB3


    We used Wireshark Network Analyser on a affected Win10 machine to check which SMB version is used when a file on a flexshare mapped as a network drive (took 20 seconds to open .docx) or mapped as network location (took ~2seconds to open same .docx). In both cases it was SMB2 protocol. SMB2 is also used on non-affected Win10 machines.

    On all Win10 machines when we run in Poweshell:



    we get
    Dialect : 3.1.1
    which suggests SMB3 is used.

    Not sure yet why, will update when I have time..