Auto HDR is a Windows 11 feature that takes games built for standard dynamic range (SDR) and expands them to high dynamic range (HDR) without the developer having to update the game. The result is brighter highlights, deeper shadows, and a wider range of colours on a compatible display.
It works automatically once enabled, but it needs an HDR-capable monitor and a supported graphics card. This guide covers how to check your hardware, turn Auto HDR on, fine-tune the effect with the Xbox Game Bar, and solve the common reasons it refuses to activate.
HDR displays can show a much wider range of brightness and colour than older SDR screens. A game built for SDR only uses a narrow part of that range, so even on a fancy monitor it looks flat. Auto HDR stretches the SDR signal into the HDR space in real time, making bright areas brighter and dark areas darker while keeping the mid-tones stable.
Before you enable it, confirm your hardware meets the requirements:
You can check whether Windows sees your display as HDR-capable in Settings > System > Display > HDR. If the page says the display is not HDR-capable, Auto HDR will not be available.
Auto HDR is a sub-setting of HDR, so you need to enable both. They live on the same page.
Step 1. Open Settings > System > Display and select the display you want to use if you have more than one.
Step 2. Click HDR.
Step 3. Turn on Use HDR. This switches the display into HDR mode, which the operating system and apps can then use.
Step 4. Turn on Auto HDR. From now on, any SDR game that supports the required graphics API will be converted to HDR automatically.
Step 5. If you want to confirm it is working, launch an SDR game and press Win + Alt + B. This keyboard shortcut toggles Auto HDR on and off for the active game, so you can compare the look side by side.
Auto HDR applies a default conversion, but you can tweak how strong the effect is for each game using the Xbox Game Bar.
Step 1. Launch the game you want to adjust and make sure it is running.
Step 2. Press Win + G to open the Xbox Game Bar.
Step 3. Click the Settings (gear) icon on the Game Bar and go to the Gaming features or HDR section.
Step 4. Look for the Auto HDR intensity slider. Moving it to the right makes the HDR effect stronger with more dramatic highlights; moving it left keeps the look closer to the original SDR.
Step 5. Close the Game Bar and continue playing. The setting is remembered for that specific game.
If the slider is greyed out, Auto HDR is not active for that game, either because the game already uses native HDR or because it does not support the conversion.
Auto HDR works well for most SDR games, but a few look better with it off, for example when the conversion creates unnatural colours or crushed blacks. You can control it per game.
Step 1. Open the Xbox Game Bar with Win + G while the game is running.
Step 2. Go to Settings > Gaming features.
Step 3. Find the toggle for Auto HDR for the current game and switch it off. The game reverts to its native SDR output.
Step 4. To turn it back on, repeat the steps and switch the toggle on again.
Windows remembers your choice for each game, so you only have to set it once. Games that support native HDR are unaffected by this toggle and should be configured from their own in-game settings.
Enabling HDR is not enough on its own. A poorly calibrated HDR display can look washed out or too dark, which makes Auto HDR look worse than the original SDR. Windows includes a calibration tool.
Step 1. Go to Settings > System > Display > HDR.
Step 2. Click Calibrate your display for HDR video.
Step 3. Follow the on-screen steps. The tool shows test patterns and asks you to adjust sliders so the brightest and darkest details are just visible.
Step 4. Use the sample video at the end to check the result. If the bright areas look blown out or the dark areas lose detail, go back and adjust.
Step 5. For gaming, also set the monitor's picture mode to its HDR or game mode, and turn off any extra processing such as dynamic contrast, which can fight against the HDR signal.
A good calibration takes a few minutes but makes a bigger difference to image quality than the Auto HDR intensity slider.
If the toggle is missing or games do not switch to HDR, work through these checks.
The Auto HDR toggle is not visible.
Step 1. Make sure Use HDR is turned on first. The Auto HDR option only appears after HDR is enabled.
Step 2. Confirm your display is recognised as HDR-capable. The HDR settings page states clearly whether the display supports it.
Games do not switch to HDR even with Auto HDR on.
Step 1. Check that the game uses DirectX 11, DirectX 12, or Vulkan. Older DirectX 9 or OpenGL games cannot be converted.
Step 2. Run the game in full-screen mode. Borderless or windowed modes can prevent the HDR switch from activating.
Step 3. Update your graphics driver. Auto HDR relies on driver support, and an old driver may block it.
The HDR image looks washed out or too bright.
Step 1. Calibrate the display using the Windows HDR calibration tool described above.
Step 2. In the monitor's on-screen menu, choose the HDR or PC picture mode rather than a cinema mode, which may clip the highlights.
Step 3. Lower the Auto HDR intensity in the Xbox Game Bar if the conversion is too aggressive for a particular game.
Win + Alt + B does nothing.
Step 1. Confirm the Xbox Game Bar is enabled in Settings > Gaming > Xbox Game Bar.
Step 2. Make sure a game or full-screen app is in focus, because the shortcut only works when a compatible app is active.
No. It works with games that use DirectX 11, DirectX 12, or Vulkan. Games using older graphics APIs or native HDR are not affected by Auto HDR.
Yes. Your display must support HDR. Look for DisplayHDR certification or check the display specifications. An SDR monitor cannot show HDR content even if Windows lets you turn the toggle on.
The conversion is handled by the GPU and generally adds very little overhead. Most players do not notice a frame-rate drop, but you can test it with and without using the Win + Alt + B shortcut.
Native HDR is built into the game by the developer and gives the best quality. Auto HDR is a real-time conversion applied by Windows to SDR games. It is a good compromise for older games that never received an HDR update.
No. Auto HDR is a Windows 11 feature. Windows 10 has HDR support for apps and games that support it natively, but no automatic SDR-to-HDR conversion.
Auto HDR itself is harmless, but enabling it often goes hand in hand with driver updates, display calibration, and game setting changes. A system backup gives you a quick rollback if a driver update causes problems. Qiling Disk Master creates a full Windows image in minutes.
Step 1. Install and open Qiling Disk Master. On the home screen, open "Backup and Recovery" and choose "System Backup". This option automatically includes Windows and the hidden boot partitions, so you do not have to select them one by one.

Step 2. Check the source. The disk where Windows is installed and its system partitions are already ticked for you. If you only need your personal documents, run a separate "File Backup" task instead.

Step 3. Click the destination box and choose where the image should be saved. Use an external HDD or SSD, a NAS, or any drive other than the one Windows is installed on, and make sure it has enough free space.

Step 4. Review the task summary and click "Proceed". Wait until the progress bar reaches 100%. Do not unplug the drive or turn off the PC while the backup is running.

Step 1. Open Qiling Disk Master again, go to "Backup and Recovery", and select the recovery option. Your backup images are listed, so pick the one you created before the changes began.

Step 2. Choose the target disk or partition. Normally you restore to the original system disk. If the drive was replaced, select the new disk instead, and the restore rebuilds Windows together with its boot partitions.

Step 3. Preview the restore plan, click "Proceed", and confirm the warning. The PC restarts to finish the job, and Windows comes back exactly as it was on the day the image was created, with your files and programs intact.

Auto HDR upgrades SDR games to high dynamic range on Windows 11, giving them brighter highlights and richer colours without a developer update. Turn on Use HDR first in Settings > System > Display > HDR, then enable Auto HDR. You can adjust the intensity per game from the Xbox Game Bar and toggle it quickly with Win + Alt + B. Remember that you need an HDR-capable display, a modern GPU, and a game using DirectX 11/12 or Vulkan. For the best image, calibrate your display with the Windows HDR calibration tool after enabling it.
Protect your PC with Qiling Backup—create a system image before your next round of settings changes.
For more gaming and display troubleshooting, see Is Windows 11 Good for Gaming, Fix Windows 11 Brightness Not Working, How to Fix Game Stuttering on Windows 11, Fix Windows 11 No Sound, and Fix Windows 11 Freezing Randomly.