[Samba] Randomly losing network share file communication

[Jeremy Allison]

On Wed, Feb 15, 2017 at 05:23:32PM +0100, Izan Díez Sánchez via samba wrote:
> Hi,
> 
> Some users are experiencing problems working with files in Windows and Samba
> shares within engineering applications. The sequence is as follows:
> A user opens a file, e.g. a drawing, inside an application. The user works
> fine for a while, but suddenly it cannot edit the file anymore. The only way
> to continue working is closing and opening the file again, like if the
> session had expired and a new one needed to be opened. 

> [2017/02/15 09:45:45.486989,  3]
> ../source3/smbd/server_exit.c:246(exit_server_common)
>   Server exit (NT_STATUS_CONNECTION_RESET)

Get a wireshark trace. This usually means a TCP RST packet
was receieved.