Hey there! This is a somewhat quick guide in order to get Starfield HDR working if you might be having issues installing it correctly or getting errors.

Step 1 for Steam Enjoyers: Download Starfield Script Extender (Requirement for NativeHDR) and drop the files inside your Starfield Installation Folder (IE: C:\Games\Steam\steamapps\common\Starfield) From now on you will launch Starfield using the sfse_loader.exe instead of Starfield.exe. If you're using MO2 or Steam you can use this nice little mod to make life easier for you.
Step 1 for Game Pass Enjoyers: For Game Pass users please refer to Native HDR's Description Page for ASI Loader instructions.

Step 2: Download Native HDR and Color Banding Fix and extract once again to your Starfield Installation Folder. 

If you choose to use scRGB mode (Recommended) be sure to open NativeAutoHDR.toml with a text editor which is located in Starfield/Data/SFSE/Plugins and set to the following:

ImageSpaceBufferFormat = 2

UpgradeUIRenderTarget = true

UpgradeRenderTargets = 2

FrameBufferFormat = 2

If you choose use HDR10 mode due to DLSS 3 Frame Generation mod (DLSS can still use scRGB, just not frame generation) 

Then you will set the following inside NativeHDR.toml
ImageSpaceBufferFormat = 1

UpgradeUIRenderTarget = true

UpgradeRenderTargets = 2

FrameBufferFormat =1

Step 3: Download Reshade with Full Addon Support 

WARNING: IF YOU HAVE DLSSMOD INSTALLED, PLEASE THROW DXGI.DLL LOCATED IN YOUR INSTALLATION FOLDER INTO A SEPERATE FOLDER UNTIL AFTER RESHADE INSTALLATION!

• Run Reshade installation and Select Starfield.exe and hit next. Select DirectX 10/11/12
• Next menu you can hit Skip, or if you've already downloaded Starfield HDR select one of the presets that you've placed in your installation folder.
• To be safe, and avoid any weird errors - install all shaders (Although this may be unnecessary but we're trying to avoid issues here) except for vort_Shaders this pack is known to cause issues with Lilium Shaders. If you installed them, simply delete vort_HDR.fx from your reshade-shaders/shaders/ folder. It wont hurt to have it installed, but it will spit out an error about vort_HDR.fx in reshade logs every time.
• IF YOU ARE A DLSS MOD ENJOYER: Go back into your Starfield Installation Root Folder, Rename the new "dxgi.dll" file that reshade installed to d3d12.dll and restore the DLSS dxgi.dll from where ever you moved it.
  
  • Once installation is finished you can continue on to Step 3