Hello, I'm using RivaTuner 7.1.0, same thing happened in 7.0.2 final. Windows 10 v1709 Build 16299.248. Many things that use .net framework fail completely when I have RTSS loaded. Example: This installer from Microsoft, located here at Step 2. Direct Link: https://go.microsoft.com/fwlink/p/?linkid=859232 If I set global application detection level to None (disabling RTSS effectively), it works just fine. If I set it to Low, it crashes right away. Event Viewer provides two errors: 1. Application: wdksetup.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: exception code c0000005, exception address 62E56C37 2. Faulting application name: wdksetup.exe, version: 10.1.16299.15, time stamp: 0x560d96b1 Faulting module name: d3d9.dll, version: 10.0.16299.98, time stamp: 0xe2fbf0fc Exception code: 0xc0000005 Fault offset: 0x00046c37 Faulting process id: 0x2b94 Faulting application start time: 0x01d3b64d5796fff3 Faulting application path: F:\Downloads\wdksetup.exe Faulting module path: C:\WINDOWS\SYSTEM32\d3d9.dll Report Id: 0a78d78f-e968-4bbe-9704-5358a614841c Faulting package full name: Faulting package-relative application ID: