Dear all, i have a serious issues i cannot deal alone with: I just made a clean install of Windows 10 (pro). Made all updates. Installed all drivers. Installed Steam. Installed Assetto Corsa (with every packs). But when I start Assetto Corsa, the Launcher isn't even showing up. My new rig: i7 6700K, ASUS Hero VIII, EVGA GTX1080 SC Gaming, 32GB Corsair DDR4, 1TB SSD Samsung 850 Evo, Oculus Rift CV1, Logitech G27, Corsair K70 RGB RapidFire,.... History: On my old PC i had Windows 8.1 running. Assetto Corsa was fine. Then I made the update to Windows 10. Assetto Corsa was fine. Then I set up my new rig with my old SSD drive. Assetto Corsa with Oculus was still fine. Then I made my clean install with Windows 10. Now Assetto Corsa is not launching at all. Symptoms: When i launch Assetto Corsa, 2 instances of "Assetto Corsa Launcher 32-bit" show up in Windows task manager. Then I get 2 "beep-beep" sounds from Windows and that's it. Nothing happens. In windows event monitor i get the following Errors: Anwendung: AssettoCorsa.exe Frameworkversion: v4.0.30319 Beschreibung: Der Prozess wurde aufgrund einer unbehandelten Ausnahme beendet. Ausnahmeinformationen: System.NullReferenceException bei AC.Launcher.Startup.Main(System.String) - <System> <Provider Name="Application Error" /> <EventID Qualifiers="0">1000</EventID> <Level>2</Level> <Task>100</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2016-07-18T18:18:54.307563900Z" /> <EventRecordID>4848</EventRecordID> <Channel>Application</Channel> <Computer>SvensPC</Computer> <Security /> </System> - <EventData> <Data>AssettoCorsa.exe</Data> <Data>0.16.714.4849</Data> <Data>5787bc04</Data> <Data>KERNELBASE.dll</Data> <Data>10.0.10586.494</Data> <Data>5775e78b</Data> <Data>c000041d</Data> <Data>000bdae8</Data> <Data>a80</Data> <Data>01d1e120d3886a2a</Data> <Data>C:\Program Files (x86)\Steam\steamapps\common\assettocorsa\AssettoCorsa.exe</Data> <Data>C:\Windows\SYSTEM32\KERNELBASE.dll</Data> <Data>947955ff-63bf-4925-87f1-a6a70781aefc</Data> Application: AssettoCorsa.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.InvalidOperationException at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef) at MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr) Things i have already tried: Make a local check of Assetto Corsa files. Uninstalled some additional programs (ASUS AI Suite, etc...) Turned every overclocking off Installed DirectX and vcredist from folder "_CommonRedist" DOTNET4.0 couldnt be installed since it is already part of Windows10. I even installed Visual Studio in order to get all C++-Runtimes I can possibly think of. I also created a new windows user with admin rights and tried everything all over There was a certain Windows Update to be found in other forums, that needed to be installed. I do not have this update. I also uninstalled Assetto Corsa and Steam. Deleted everything and Only installed Assetto Corsa Basic (without the add-on packs). Has anyone an idea? Anything? Please help. I have been so frustrated that I bought ProjectCars - just to play "something".... Thank you for any help!