Here is a guide on how to disable EAC for offline play in ELDEN RING.
Disabling the EAC
1. In the Elden Ring game installation folder, rename start_protected_game.exe to something else (I renamed it to start_protected_game2.exe)
2. Select EldenRing.exe, copy and paste it in the same folder

3. Rename EldenRing – Copy.exe to start_protected_game.exe


4. Launch as normal. The game will now start in offline mode.
By Ryu