Easy Anti-Cheat error: Untrusted system file aticfx64.dll
Trying to play Rocket League online on a Windows 10 64-bit computer with an AMD Radeon HD 7570. I realize this is somewhat elderly graphics hardware but this did formerly work as recently as last week and does currently work in offline mode. Now it does not. The error is caused by Easy Anti-Cheat and is:
> Untrusted system file (\?\GLOBALROOT\Device\HarddiskVolum3\Windows\System32\aticfx64.dll)
I have tried the following drivers:
AMD Radeon HD 7570 15.200.1045.0 2015-06-22
AMD Radeon HD 7500 Series 15.200.1062.1004 2015-08-03 (labeled as 15.7.1 WHQL on AMD.com)
AMD Radeon HD 7500 Series 15.301.1901.0 2016-02-26 (labeled as "Crimson Edition 16.2.1 Beta" on AMD.com)
I have also tried:
- Display Driver Uninstaller (no change)
- SFC (no change)
- System Restore (failed)
- Repair of Easy Anti-Cheat (no change)
- Windows Update (there are no new updates)
I then decided to download various versions of aticfx64.dll from some dodgy-looking DLL download sites. Astonishingly the second attempt actually cleared the error, but then a new error with a different DLL file appeared. I went through several DLL files and eventually got stuck at atiumd64.dll.
Any advice would be appreciated.