[CentOS] Samba issues with Win 10

Hi, folks,

   Just ran into a problem: someone with a new laptop, running Win 10,
version 1709, tried to map their home directory (served from a CentOS
6.9 box, and it fails, with Windows complaining that it no longer
supports SMBv1, and if you go to their site, you can install support
for that manually....

   The server running samba can *not* be updated to 7 - we have a lot of
stuff based off it, and most of our users use it, one way or another,
so it's a major thing when we do finally upgrade (or, more likely,
replace the server).

   Has anyone run into this, and if so, any workarounds on the Linux end?

         mark