User accounts management

Hi there.
How can manage users who logon in SUSE Server Desktop 15 SP6 and constantly they can’t login because it looks like session was broke/stuck.
They connect remotely from windows to our server (SUSE 15 SP6), in the first attempt they logon correctly. After some time elapsed randomly users can’t be able to access to server, and I need to reboot the computer in order to all users can logon.
All users access remotely thru xrdp/xvnc remote desktop.
is there a solution for this?
Thank you.
Salvador.