How to Disable Outlook Hardware Graphics Acceleration to Fix Display Glitches

You may see visual problems in Outlook like blurry text, missing buttons, or screen flickering. These display glitches are often caused by a conflict with your computer’s graphics hardware. This article explains how to turn off hardware graphics acceleration in Outlook to resolve these visual errors.

Outlook uses your graphics card to render the interface faster, but outdated drivers or specific hardware can cause issues. Disabling this feature forces Outlook to use standard software rendering, which is more stable. You will learn the steps to access the setting and confirm the change is active.

What Outlook Hardware Graphics Acceleration Does

Hardware graphics acceleration is a feature in Outlook that uses your computer’s Graphics Processing Unit to draw the application interface. The GPU is designed to handle complex visual tasks quickly. This can make scrolling through your inbox or viewing calendar transitions appear smoother.

However, this feature depends on compatible graphics drivers from manufacturers like NVIDIA, AMD, or Intel. If these drivers are old, corrupted, or not optimized for Outlook, visual glitches occur. Common symptoms include corrupted text in the reading pane, ghosting images, or parts of the ribbon menu not drawing correctly. Disabling acceleration bypasses these potential driver conflicts.

Prerequisites Before You Start

You need a working Outlook installation and administrator rights on your PC to change graphics settings in Windows. Ensure Outlook is fully closed before proceeding. It is also a good practice to note your current graphics driver version in Device Manager. This helps if you need to update the driver later as a permanent solution.

Steps to Disable Graphics Acceleration in Outlook

Follow these steps to turn off hardware acceleration directly within the Outlook application. This is the most direct method and applies to Outlook for Microsoft 365, Outlook 2021, and Outlook 2019.

1. Open Outlook Options
   Launch Outlook. Click the File tab in the top-left corner to open the Backstage view. Select Options from the left-hand menu. This opens the Outlook Options dialog box.
2. Navigate to Advanced Settings
   In the Outlook Options window, select the Advanced category from the list on the left. Scroll down within the advanced settings to find the Display section.
3. Disable the Acceleration Setting
   In the Display section, locate the checkbox labeled Disable hardware graphics acceleration. Click the checkbox to place a checkmark in it. Click the OK button at the bottom of the window to save the change and close the dialog.
4. Restart Outlook
   Close Outlook completely. You can do this by clicking File > Exit or by right-clicking the Outlook icon in the system tray and choosing Exit. Relaunch Outlook from your Start menu. The display should now use software rendering.

Alternative Method: Windows Graphics Performance Setting

If the problem persists or you use multiple monitors, you can force Windows to use a specific graphics processor for Outlook. This method is useful on laptops with both integrated and dedicated GPUs.

1. Open Windows Graphics Settings
   Right-click the Windows Start button and select Settings. Go to System and then click Display. Scroll down and click on Graphics.
2. Add Outlook to the List
   Under Custom options for apps, click Browse. Navigate to the Outlook executable file, typically at C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE. Select it and click Add.
3. Set Graphics Preference
   Click on the newly added Outlook entry and select Options. In the Graphics preference dialog, select Power saving. This tells Windows to use the integrated, more stable graphics processor for Outlook. Click Save.

Common Mistakes and Limitations

Outlook Closes Immediately After Disabling the Setting

If Outlook crashes on restart, the setting change may have conflicted with an add-in. Start Outlook in Safe Mode by pressing Windows Key + R, typing outlook.exe /safe, and pressing Enter. If it starts correctly, disable your add-ins one by one via File > Options > Add-ins.

Display is Still Blurry or Glitchy

The issue might be a Windows Display scaling setting. Right-click your desktop, choose Display settings, and ensure the scale is set to 100%. Also, check for Windows updates, as they often include graphics driver improvements. Open Settings > Windows Update and click Check for updates.

Can’t Find the Disable Hardware Graphics Acceleration Checkbox

This option is not available in older versions of Outlook like 2013 or 2016. For these versions, you must use the Windows Graphics Settings method described above. Alternatively, updating to a newer version of Outlook will provide the built-in option.

Hardware Acceleration On vs Off: Performance Impact

Item	Hardware Acceleration ON	Hardware Acceleration OFF
Primary Use	Uses GPU for rendering	Uses CPU for software rendering
Visual Performance	Smoother animations, scrolling	Potential for slight lag with complex views
Stability	Prone to driver-related glitches	Higher display stability
System Resource Use	Lower CPU load, higher GPU load	Higher CPU load, lower GPU load
Best For	Modern PCs with updated drivers	Resolving display corruption or older hardware

You can now fix visual glitches in Outlook by disabling hardware acceleration. If the problem is resolved, consider updating your graphics drivers from the manufacturer’s website for a long-term solution. For advanced users, the Windows Registry key HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Graphics can be modified to disable acceleration for specific Outlook components like the reading pane.