Hello Fellow Samba Users! I have an issue that I have been trying to understand for a while, and I have narrowed it down to different "vers=" mount types. I have only seen this issue manifest itself on Linux clients (Archlinux) running Microsoft Office in excel (Not that I have tried a million others). A year or two ago, I thought I solved it by disabling oplocks, or at least messing with the oplock setting on an openindiana NAS I was working with at the time. Thinking back, I may have just changed the vers client side like I had to do this time. I have been dealing with this for many years. I have this strange issue that effects excel (Could be other MS software too, I did not check). I open a document, and when I go to save it I get: "Your changes could not be saved to "bla.xlsx' because of a sharing violation. Try saving to a differnet file." I have spent some hours on trying to make this go away. It does not happen with windows clients. At this time I am working with an Archlinux client and FreeNAS server. I am using crossover (commercial wine) to run Office 2010. The only way I could get the error to go away was to set vers=1.0, and remove nounix if I have it from my mount line. I tried 2.1, 3.0, and 3.11. It is a strange issue, that even happens when I disable oplocks. I have looked into how excel saves files, and it uses writes, renames, and deletes. Nothing special (https://support.microsoft.com/en-us/help/814068/description-of-the-way-that-excel-saves-files). I have noticed this issue gets worse and worse when I use newer Samba vers options=. Since I am using an Archlinux client I am always on the latest version. I would like to take the time to figure this out if someone could help me by telling me what I need to do. If someone already knows what is going on, that works too! Like I said, I have had this issue before, but my most recent struggle with it started in August of last year when I moved to FreeNAS, where I was able to use newer versions of Samba. I have a post in the FreeNAS forum where no one has been able to help here: https://www.ixsystems.com/community/threads/smb-sharing-violation-linux-client-excel-2010.69421/ I think I have posted the issue in quite a few places...It is frustrating getting help with this, because a lot of individuals sarcastically answer stop using MS software on Linux. While I can see how there can be some compatibility issues with how Wine translates paths to Office, they offer no path to actually trying to figure it out. I did explore Wine paths and prefixes (configuration of the wine enviroment, and how it maps drive letters and paths to the local file system), but did not have any luck.