# Editor Diagnostics preferences reference

> Reference for Editor Diagnostics preferences.

When you report a problem to Unity, the Unity Support Team might need you to enable diagnostic switches to help identify the cause. Running diagnostics on an application, whether in the Editor or a Player, impacts performance and user experience. You should only run diagnostics when the Unity Support Team requires them.

To open the preferences, go to **Edit > Preferences > Editor Diagnostics** (macOS: **Unity > Settings > Editor Diagnostics**).

If diagnostic switches are active in your application, Unity displays a warning in the Console window. To reset switches, in the **Editor Diagnostics** tab, click **Reset all**.

If an active diagnostic switch prevents the Unity Editor from opening, use the `--reset-diagnostic-switches` parameter to reset all switches from the command line. For more information on using command line arguments at launch, refer to [Command line interface](/engine/6000.0/manual/unity-editor/command-line-arguments.md).

## Additional resources

* [Debugging and diagnostics](/engine/6000.0/manual/scripting/debugging-and-diagnostics.md)
* [Run Unity from a command-line interface](/engine/6000.0/manual/unity-editor/command-line-arguments/run-unity.md)