EDIT 2: I solved my problem by accident. Appareantly i was missing the Java Runtime Environment so everyone with the same problem go download that. EDIT: I also tried the latest beta and stable versions and had the same problem but the version mentioned by Peter77 that can be found here is working for me Hi, i am trying to get into Unity and as my first project i want to make a small android app but i encountered my first problem before even really getting startet and afte searching for hours i found no solution so maybe someone here can help me. When i open the player settings window and click on the android tab the window goes partially blank and i get about 155 errors in the console: "CommandInvokationFailure: Failed to update Android SDK package list. C:/Program Files/Unity/Hub/Editor/2019.3.0a7/Editor/Data/PlaybackEngines/AndroidPlayer\SDK\tools\bin\sdkmanager.bat --list" "GUI Error: You are pushing more GUIClips than you are popping. Make sure they are balanced. UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)" "ArgumentException: GUILayout: Mismatched LayoutGroup.repaint UnityEngine.UIElements.UIR.RenderChain.Render (UnityEngine.Rect topRect, UnityEngine.Matrix4x4 projection) (at C:/buildslave/unity/build/Modules/UIElements/Renderer/UIRChainBuilder.cs:238) UnityEngine.UIElements.UIRRepaintUpdater.DrawChain (UnityEngine.Rect topRect, UnityEngine.Matrix4x4 projection) (at C:/buildslave/unity/build/Modules/UIElements/Renderer/UIRRepaintUpdater.cs:66) UnityEngine.UIElements.UIRRepaintUpdater.Update () (at C:/buildslave/unity/build/Modules/UIElements/Renderer/UIRRepaintUpdater.cs:54) UnityEngine.UIElements.VisualTreeUpdater.UpdateVisualTree () (at C:/buildslave/unity/build/Modules/UIElements/VisualTreeUpdater.cs:73) UnityEngine.UIElements.Panel.Repaint (UnityEngine.Event e) (at C:/buildslave/unity/build/Modules/UIElements/Panel.cs:694) UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at C:/buildslave/unity/build/Modules/UIElements/UIElementsUtility.cs:274) UnityEngine.UIElements.UIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at C:/buildslave/unity/build/Modules/UIElements/UIElementsUtility.cs:107) UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)" "Scope was not disposed! You should use the 'using' keyword or manually call Dispose. UnityEngine.Scope:Finalize()" Those four errors repeat over and over. This is what my Project Settings Window looks like at this Point: Please send Help.