Hello,
I have checked your project in packet tracer,
The changes I did as shown below.
Changed domain name to server1.com / server2.com in respective servers.
![Screenshot 2024-03-25 210852.png Screenshot 2024-03-25 210852.png](https://community.cisco.com/t5/image/serverpage/image-id/213832i0274A8093B6CC191/image-size/medium?v=v2&px=400)
And when creating user profile in individual PC- the username must match with user created in server.
![deepikarachala92_0-1711390523241.png deepikarachala92_0-1711390523241.png](https://community.cisco.com/t5/image/serverpage/image-id/213833iAD8056A1E274E7F7/image-size/medium?v=v2&px=400)
Hope this helps.
thank you.