Jeremy, my problem doesn't seem related to the "fill_share_mode_lock failed".
I tested on another Samba server with a Windows client and the problem is the same: Windows request four times a "TRANSACT2_QPATHINFO" for each file (eg. ASP script sweeping a directory) -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba