Protection Failed Error Code 4 X360ce 2021 |best| - Self

The second solution involved permission management. As the error was often triggered by read/write access denials, running both the x360ce configuration tool and the target game as "Administrator" became a prerequisite. This elevated the software's permissions, allowing it to bypass certain Windows User Account Control (UAC) restrictions that were blocking the memory hook.

x360ce requires high-level system access to emulate virtual controller drivers. self protection failed error code 4 x360ce 2021

Alternatively, temporarily disable the firewall to confirm if it is the culprit. The second solution involved permission management