>>It turned into a link when you replied... but you can also copy and paste the thread number into the MessageId textbox on top left.
>
>I added # so I can click it thereafter ;-)
>Will try first with flush force as I fo not hv to change much. If not will hv to look at other options.
>
>Coleague suggested also that by changing to W10, SMB / oplock settings could hv changed along.
>Is that plausible ?

Are you trying to check whether there's a possibility that, after installing some silly little upgrade from Microsoft, your settings may accidentally revert to default? In which universe do you live? Never!

It's by design, not by accident.