How to make Diablo 3 fullscreen on Windows and MAC OS? [Solved]

Can’t make Diablo III fullscreen on Windows or Mac OS? Stuck playing the game in Windowed mode? Not even the Diablo Immortal developers would be this cruel to subject themselves to this.

Fear not! In this guide, you will receive 4 simple tips to help you play Diablo III in its angelic (and demonic) fullscreen glory.

Solution 1: Use Keyboard Shortcuts to make Diablo 3 fullscreen

You can force any game into fullscreen mode with certain shortcuts on Windows PC and even Mac OS. For Diablo 3 this is no different.

On Windows PC:

For Windows users, you can go fullscreen with 3 simple keyboard shortcuts. Not every game is compatible, but it works for a wide majority of titles. Open Diablo 3 and try pressing these keys.

1. Press [F11] once.
2. Press [Alt] and [Enter] at the same time.
3. Hold [Fn] if your keyboard has a function key, then press [F11].

On MAC OS:

For Mac users, you can go fullscreen on Diablo 3 with 3 simple keyboard shortcuts:

1. Tap on the green button on your top bar.
2. Press [Command] [Ctrl] [F] to go fullscreen.
3. Hold your function key [Fn] and press [F11].

Solution 2: Change Diablo 3’s video settings to Fullscreen

This is a simple solution available to players on Windows PC or Mac OS. Simply change your screen display settings to Fullscreen, and your game should be running in, well, full screen mode.

To play the game in fullscreen, change the following video setting:

1. Run Diablo 3.
2. Click on [Options].
3. Navigate to [Video], on the right side of the menu, you should see [Display] settings.
4. Select [Fullscreen] to play in full screen mode, or [Windowed (Fullscreen)] if you wish to play in Borderless Windowed mode.

As for your [Resolution] settings, make sure it’s accurately set to your PC’s settings. There are ways to check your recommended settings on Windows and Mac OS, we cover it briefly below if you don’t know.

Additional Tip: How to check Your Recommended Resolution Settings

Setting the right resolution will reduce blurriness, and deal with bugs such as the game only appearing partially fullscreen. I.e Occupying only a small part of your monitor.

If you don’t know how to find the native resolution of your device, use this method.

Find Your Windows PC Native Resolution:

1. Right click an empty space on your desktop and select [Display settings].
2. Scroll down and find [Display resolution].
3. Find a display resolution that says (Recommended).
4. Use the same resolution for Diablo 3.

Find Your Mac OS Native Resolution:

1. Click on the Apple icon on the top left of your screen.
2. Select [About this Mac].
3. Now select [Display].
4. Find your current display settings under [Built-in Display].
5. Select the same resolution for Diablo 3.

Solution 3: Run Diablo 3 in Compatibility Mode (Windows Only)

IF you can finally go full screen, but the game is now crashing every time you do so; going compatibility mode with Windows 8 should fix it. Unfortunately this is not an available troubleshoot for Mac users.

To do this you must locate Diablo 3’s program file and edit the properties.

1. Open Battle.Net.
2. Navigate to Diablo 3.
3. Next to the Play button, select the [Gear Icon] then choose [Show in explorer].
4. Now right click Diablo 3’s original game file and choose properties.
5. Tick the compatibility mode option and select [OK].

This should fix the bug which crashes Diablo 3 when you launch or play it in full screen mode.

Solution 4: Update NVIDIA Control Panel or AMD Radeon Software and Turn Off GPU Scaling (Windows Only)

This option only exists for Windows users. Turning off GPU Scaling will fix stuttering, flickering, or partial full screen issues with Diablo 3.

Before you turn off GPU Scaling in your NVIDIA or AMD software, make sure you are updated to the latest version of your graphics drivers.

Steps to update / check your graphic drivers:

1. Search for [Device Manager] and open it.
2. Navigate to [Display adapters], double click to expand it, then select your driver.
3. Double click to open your driver’s [Properties].
4. Navigate to [Driver] and click on [Update Driver].
5. Choose the first option and wait for the results.

If an update is available, a setup will pop up. Otherwise, you are already on the latest version of your software. Keep reading to learn how to toggle your GPU Scaling settings.

Instructions for NVIDIA Control Panel

If your Windows PC uses an Nvidia graphics card, what you want to do is turn off NVIDIA’s scaling settings so it does not override your custom Diablo 3 settings.

Toggle on High Performance Mode

1. After opening the NVIDIA Control Panel, select [3D Settings].
2. Under [Manage 3D Settings], click on the [Global Settings] tab.
3. Make your preferred Graphics Processor [High-performance NVIDIA processor].
4. Start Diablo 3 and change your settings to fullscreen.

Adjust Scaling

1. Under [Display] on the left bar, find [Adjust desktop size and position].
2. After selecting it, take note of settings in the right bar. Set scaling to [No scaling].
3. Start Diablo 3 and change your settings to fullscreen.

Instructions for AMD Radeon Software

For devices running on AMD graphics, right click your desktop and select [AMD Radeon Software] from the menu. From there, an interface will pop up, what you’ll want to do is disable the [GPU Scaling] option.

Follow these 3 steps:

1. Click on the gear icon on the top right, then navigate to the [Display] tab.
2. Once at the Display tab, click on GPU Scaling node to turn it off.
3. Start the game and try going fullscreen again, it should work this time.

Solution 5: Repair or Reinstall Diablo 3

If all the options above have not yielded any results, it’s possible your game files are corrupted. We’ll teach you how to repair your files, or you can opt to simply reinstall everything for a clean start.

How to repair Diablo 3 with Battle.Net:

1. Open Battle.Net on desktop.
2. Find Diablo 3.
3. Next to the Play button, select the [Gear Icon].
4. Choose [Scan and Repair].
5. Wait until repairs are done before starting Diablo 3 again.

Uninstall then Reinstall Diablo 3 with Battle.Net

1. Open Battle.Net on desktop.
2. Find Diablo 3.
3. Next to the Play button, select the [Gear Icon].
4. Choose [Uninstall].
5. After uninstalling, reinstall Diablo 3 through Battle.Net again to fix corrupt files.

There you have it, 5 ways to go fullscreen in Diablo 3. If you also want to improve your frame rate in game, check out how to improve your FPS for Diablo 3 here.

Still can’t play in full screen? Everyone’s computer is different, and there may be subtleties we are unable to pinpoint in here. You can find other ways to troubleshoot in our guides here, like how to make Team Fortress 2 fullscreen. What you find may be a surprising solution!