If you downloaded a "100% Save Game" from the internet, the folder name inside the remote directory must match the AccountId in your .ini file.
Fix 1: The "Profile No Longer Available" or "Corrupted Save" Error forza horizon 5 codex save game 100 fix
The standard path for the CODEX release is: C:\Users\Public\Documents\Steam\CODEX\1551360 2. Prepare the 100% Save Files If you downloaded a "100% Save Game" from