Hi there!
Great HowTo! Thanks @Kyle_Hayes for putting effort into compiling this instruction.
I’ve managed to get Ubuntu 32 bit 16.04 LTS work like a breeze. 
However I’, facing a problem with 64 bit 16.04 LTS. I can join the AD, logon via terminal and access all my files. No problem. But when I logon via lightdm some interesting (?) things happens. The desktop appears with all the files I have on it, as normally. But the launcher to the left shows up for less than a second an then disappears!? In syslog I get this error message, which I suspect is related:
Blockquote (update-manager:7337): dconf-WARNING **: failed to commit changes to dconf: GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._g_2dfile_2derror_2dquark.Code2: Failed to rename file ‘/home/name@ad.server/.config/dconf/user.BRVNFZ’ to ‘/home/name@ad.server/.config/dconf/user’: g_rename() failed: Permission denied > Blockquote
Then I try a freshly installed Ubuntu 64 bit 17.10 with no success unfortunately. I cannot start sssd.service and systemctl status sssd gives this message:
Blockquote sssd[1504]: tkey query failed: GSSAPI error: Major = Unspecified GSS failure Minor code may provide more information, Minor = Server not found in Kerberos database > Blockquote
Any ideas on what might be wrong? Have I misconfigured my nethserver? All suggestions will be highly appreciated since I for now have to keep my old Zentyal server, which I would prefer to ditch as soon as possible.
Kind regards
/Mathias