# HDR on Windows 11: requirements, calibration and when to leave it off

> Enable HDR only when the display can show it: panel requirements, Windows HDR settings, calibration, Auto HDR and game compatibility.

**Tested on**

- Build: 26300.9457
- Edition: Pro (26H2)
- Architecture: x64
- Evidence: E1
- Verified: 2026-10-28

## The short answer

HDR is not a software toggle that makes any display look better. It needs:

- a display with real HDR capability (local dimming or OLED-level contrast);
- a GPU/port/cable that carries the required bandwidth;
- HDR content or a game with HDR support;
- Windows HDR enabled and calibrated;
- correct in-game HDR settings.

A “HDR400” edge-lit panel often looks worse in HDR than a good SDR calibration. Enable it deliberately, per display.

## Windows setup

1. Connect the display with the correct cable/port.
2. **Settings → System → Display → HDR**; enable HDR if available.
3. Run **Windows HDR Calibration** and follow the patterns.
4. Set SDR content brightness to taste; do not max it.
5. In games, enable HDR in-game and calibrate with the game’s own sliders.

## What HDR changes

| Control | What it does | Common mistake |
|---|---|---|
| HDR on/off | Switches the output transfer function | Leaving HDR on for SDR desktop |
| SDR brightness | Brightness of non-HDR content | Maxing it and clipping highlights |
| Auto HDR | Expands SDR games to HDR | Expecting it to work in every game |
| Game HDR | Per-game HDR calibration | Using Windows calibration only |
| Peak brightness | Display capability | Trusting a “HDR1000” logo without testing |

## When to leave it off

- The panel has no local dimming and poor black levels.
- The game’s HDR implementation is broken (washed-out image).
- You do desktop work and do not want the SDR/HDR switching overhead.
- The cable/port cannot carry the resolution + refresh + HDR combination.

## Test properly

- Use a calibration pattern or a known HDR test clip.
- Check black level, highlight detail and color banding.
- Compare SDR and HDR in the same scene.
- Verify the display OSD reports HDR mode.
- Do not judge HDR from the Windows desktop alone.

> **Caution: Do not “fix” HDR with a registry hack**
>
> If HDR is unavailable, check the display, cable, port and GPU first. Registry overrides can produce a broken image and are not a substitute for capable hardware.

## Sources

- [Microsoft — HDR displays](https://learn.microsoft.com/en-us/windows/win32/direct3darticles/high-dynamic-range)
- [Microsoft — HDR settings in Windows](https://support.microsoft.com/en-us/windows/hardware/display-graphics/hdr-settings-in-windows)
- [Microsoft — Windows HDR Calibration](https://apps.microsoft.com/detail/9n7f2sm5d1lr)

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Source: https://windows.homes/en/windows/gaming/hdr/