Please an adapted: for Neth 7 as AD PDC and file server with Ubuntu

Hello friends,

it is possible that the original howto by @Kyle_Hayes no longer works in newer versions of Ubuntu.
I played with 21.04 today but unfortunately you can’t integrate the computer into AD, I’ve tried a few things with KRB5 but somehow it doesn’t work.
Vll. is there someone who masters it and can adapt the HowTo accordingly.

Thank you so much!

First step please: report what goes wrong during steps…

Quite simply, you go through the HowTo.
Everything is set up so far but a login does not work.

Message: System error

You read a little further and you get a few references to KRB5, but then the tracks get lost in the forest.

Zero-start hint: dig into messages and logs.