[UE5 How To] Disable F1-F5 Keys (Editor & Runtime) | Easiest Tutorial

1 min tutorial for disable the Unlit / Shader Complexity Viewmode. This method can solve crashing a running game when you enable the viewport debug mode also.

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#1 - Open UE installation folder

Example: C:\Program Files\Epic Games\UE_5.0\Engine\Config\BaseInput.ini

#2 - (Optional) Create a backup of the file: BaseInput.ini

Create a copy and rename it to BaseInput.ini_BACKUP
Or you can save this website link for future usage 🙂

#3 - Open "BaseInput.ini" using notepad, and find this...

            +DebugExecBindings=(Key=F1,Command=“viewmode wireframe”, bIgnoreShift=True)
+DebugExecBindings=(Key=F2,Command=“viewmode unlit”)
+DebugExecBindings=(Key=F3,Command=“viewmode lit”)
+DebugExecBindings=(Key=F4,Command=“viewmode lit_detaillighting”)
+DebugExecBindings=(Key=F5,Command=“viewmode shadercomplexity”)

#4 - Delete the related lines or modify settings to use different keys

Result Example:

            // Part of the line

+DebugExecBindings=(Key=F2,Command="viewmode unlit")
+DebugExecBindings=(Key=F3,Command="viewmode lit")

            // Whole Section

[/Script/Engine.PlayerInput]

; --- General bindings
+DebugExecBindings=(Key=F11,Command="LevelEditor.ToggleImmersive", bIgnoreCtrl=True, bIgnoreAlt=True)
+DebugExecBindings=(Key=F11,Command="MainFrame.ToggleFullscreen",Shift=True)
+DebugExecBindings=(Key=F2,Command="viewmode unlit")
+DebugExecBindings=(Key=F3,Command="viewmode lit")
+DebugExecBindings=(Key=F9,Command="shot showui")
+DebugExecBindings=(Key=Period,Command="RECOMPILESHADERS CHANGED",Control=True,Shift=True)
+DebugExecBindings=(Key=Comma,Command="PROFILEGPU",Control=True,Shift=True)
+DebugExecBindings=(Key=Slash,Command="DumpGPU",Control=True,Shift=True)
+DebugExecBindings=(Key=Tab,Command="FocusNextPIEWindow",Control=True)
+DebugExecBindings=(Key=Tab,Command="FocusLastPIEWindow",Control=True,Shift=True)
+DebugExecBindings=(Key=PageDown,Command="PreviousDebugTarget")
+DebugExecBindings=(Key=PageUp,Command="NextDebugTarget")
; Please remove EnableGDT command binding after removing deprecated GameplayDebugger module (we are going to use Gameplay Debugger plugin soon)
+DebugExecBindings=(Key=Apostrophe,Command="EnableGDT")
+DebugExecBindings=(Key=Quote,Command="EnableGDT")
; --- PIE only binding
+DebugExecBindings=(Key=Semicolon,Command="ToggleDebugCamera")