With Xsan 2.2 or later, Xsan volumes can be created or updated to use native extended attributes. If native extended attributes have been implemented on an Xsan volume, Windows users connecting over SMB may receive a message stating that an item can’t be copied from the share point because the item can’t be found.

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Xsan 2.2: Windows client unable to copy item from share point via SMB when native extended attributes are enabled

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