Hi.
I see many Forza Horizon 4 threads or other games using Windows 10 and the support consultants tells people to uninstall the Windows 10 1909-build update/KB from peoples PC.
One thing that fixed every game and loading crash or when alt-tabbing was to go into the task manager on my PC after launching the game and I had to go to Taskmanager -> Processes -> from here I had to end the task: Xbox Game Bar.
After I did that, I no longer have game crashes after loading my save, starting a multiplayer session or when alt-tabbing from the game.
Just wanted to let you all know that it was all a Xbox Game Bar-bug while using Windows 10 1909-build. It's not recommended to uninstall a big build-update containing several security and Windows-patches that are recommended to have on a PC.
Also do the last step in this guide to disable Game Bar permanently (disable using local group policy): https://www.minitool.com/news/disable-windows-10-xbox-game-bar-001.html
Don't forget to exit MSI Afterburner og EVGA Precision completely if u have it running on your PC. If you have any settings you need to apply from those programs, then do it first and then exit them.
Also if you get crashes alot while alt-tabbing, make a .bat file with these like this.
Open notepad on your PC and copy-paste these lines and select "All files" and Save it on your desktop as Forza.bat:
@echo off
START explorer.exe shell:appsFolder\Microsoft.SunriseBaseGame_8wekyb3d8bbwe!SunriseReleaseFinal
TIMEOUT /T 70 /NOBREAK taskkill /f /im explorer.exe
:LOOP TASKLIST | FIND /I "FORZAHORIZON4" >nul 2>&1 IF ERRORLEVEL 1 ( GOTO CONTINUE ) ELSE ( ECHO fh4 is still running TIMEOUT /T 5 GOTO LOOP )
:CONTINUE
START explorer.exe EXIT
Run the .bat file after starting the game. What this file does, is making the game run in "Window mode fullscreen", and the game should not crash when alt-tabbing.