Unreal 5.4 crash/will not start "DerivedDataCache"

  • Turning off VPN does NOT work for me.
  • Modifying the DefaultEngine.ini is not working for me.
  • Deleting the DerivedDataCache in both the Engine folder and %localappdata%\UnrealEngine\5.5 does not work for me.

The -DDC-ForceMemoryCache option is the only thing that works. This should be fixed by Unreal, I can imagine this immediately halting new developers trying to get into the engine.