On July 23rd, Trusted Mode became the default mode for Counter-Strike: Global Offensive. Trusted mode in Counter-Strike: Global Offensive blocks third-party files from interacting with the game and as such, can have issues with NVIDIA gaming solutions (GeForce Exerience Share, NVIDIA Freestyle, etc.).
To allow 3rd party apps to interact with Counter-Strike: Global Offensive, you must disable Trusted Mode. To do this, follow the instructions below:
1. From the Steam Library, right-click over "Counter-Strike" Global Offensive" and select "Properties".
2. From the "General" tab, left-click over the "SET LAUNCH OPTIONS..." button. Next type the following line into the text field and click on the "OK" button:
3. Click on the "CLOSE" button.
4. Launch the game.
For more information on CS:GO Trusted Mode, please visit: