For Steam/Epic versions, re‑detection may fail.
Most modern modding tools have a built-in feature to let you browse for the file manually.
Ensure your game is not installed in a protected system folder, such as C:\Program Files or C:\Program Files (x86) , or the C:\Windows folder.
If you recently moved GTA V from one drive to another (e.g., from C: to D: ) without using the official launcher's "Move" feature, the registry still points to the old location.
Common default paths: