Covering how to change the default external editor of UE5s textures from Microsoft Paint to Photoshop
Step 1 - Open the registry editor
Press Windows Key + R and type 'regedit' and hit enter
In the start menu search type regedit
Step 2 - Navigate to the correct registry key
Using the left hand navigation, or copy + paste this path
Computer\HKEY_CLASSES_ROOT\SystemFileAssociations\image\shell\edit\command
Step 3 - Find your photoshop path
Depending on the photoshop version, and where you installed it your path may differ.
Best way to find the path is right click your photoshop shortcut in the start menu, and in the context menu click properties
Copy this target path
Step 4 - Edit the registry key
Double click the name '(Default)' and in the value data field highlight the part that says "%systemroot%\system32\mspaint.exe" and replace it with your target path.
"C:\Program Files\Adobe\Adobe Photoshop 2023\Photoshop.exe" "%1"Here you can see I kept the "%1" at the end of my path, ensure you do the same
Now when you right click textures in Unreal Engine 5 and click Open In External Editor photoshop should open up instead of paint, allowing you to make edits more easily!
