Right-click on CS:GO and select properties. In the 'general' tab, click on 'set Launch options'. Type in -allowthirdpartysoftware in the text box (see image below). Run CS:GO with Trusted Mode disabled. The launch option to enable third-party software (Screenshot via Steam) If you do enable third-party software. Feb 14, 2016 The certificate is some code inserted into the app code. Users can set their machines to allow third-party apps downloaded from the Internet, but only if they include one of these security certificates. Find out how to change the settings below so you can install downloaded apps from trusted third-party websites. This is the easy and comfortable way. Let’s how to Allow Third-Party Apps to Install on macOS Catalina. Go ahead and open Terminal from the Spotlight. Next copy and paste this command then hit Enter. Enter your password when it asked. After that done, it will allow third-party apps all the time and that’s all.
1. Open 'System Preferences' by clicking on the Apple icon and choosing that option.
2. Select 'Security & Privacy' from the 'System Preferences' window.
Third Party Game
3. Select the 'General' tab, and select the lock in the lower left corner to allow changes.
4. Enter your computer username and password, then select 'Unlock.'
Mac Big Sur Unidentified Developer
5. In the 'Allow apps downloaded from:' section, select the radio button to the left of 'Anywhere.'
Mac App Cannot Be Verified
6. Close the window. You can now install unsigned applications that you trust.