Outlook 365 flickering and flashing [Fixed]

Anything flickering or flashing on the screen points to a graphics issue. We have noticed it happening all over the screen, applications, and browsers, and in this case, it’s the Outlook 365 flickering and flashing, making it annoying to read the emails. This post will guide you to fix the problem using various solutions.

Outlook 365 flickering and flashing [Fixed]

Why does the Office flickering issue happen?

According to what we have seen in the forums, it’s primarily because corrupt Office files or Outlook Add-ins are causing the issue. This is followed by Outlook using too much GPU for unknown reasons, and then we have the driver issue. The latter is on the minimal side because the drivers are usually updated to the latest version unless you have blocked it.

Outlook 365 flickering and flashing

There are four reported ways to fix the Outlook 365 flickering and flashing issue:

  1. Disable all unnecessary Outlook add-ins.
  2. Change Outlook Display Settings
  3. Update Graphics Driver
  4. Repair Office

These solutions assume that you have updated Microsoft Edge to the latest version and have an admin account.

1] Disable all unnecessary Outlook add-ins

Outlook, like all other Office applications, supports third-party add-ins or extensions. These programs enhance the experience and hence are extremely popular. If the issues started after updating or installing one such add-in, it could be causing the problem.

Outlook Addins Office

  • Open Outlook and wait for the sync to complete
  • Then go to  File > Options > Add-ins.
  • Disable all of them, and restart Outlook.
  • If this works, you will need to enable them individually and determine if the issue is resolved.

Another quick way to check the Outlook issues is to open it in Safe mode. In Safe mode, add-ons will not load, and Outlook functions will also be limited. Keep using Outlook for some time, and check if the issue persists.

2] Change Outlook Display Settings

You can disable the high-performance Outlook setting from the Graphics section in Windows. Windows usually decide it, but you can also set it to choose Power saving mode or let Windows decide. Since  Hardware acceleration is not part of Outlook anymore, you can set this.

Display Graphics Settings Office

Go to Settings > Display, Graphics. Select the Office app, and then click on the Options button. Then select Power saving, and save the change.

If you cannot find the Office app, you can add it. First, click on the drop-down for Add an app, and switch to Microsoft Apps. Then click on Browser, which will display the list of available apps on the PC.

3] Update Graphics Driver

The display driver can be the issue if the screen is flickering even with the application closed. You can download the OEM software and then update the graphics driver. Do not try to update using Windows Device Manager or Windows Update, as the driver could be a little older.

To download the correct driver version, find the GPU or Motherboard model, download the software from OEM, and install it. That is your best bet to get the latest driver. Also, make sure you restart the PC once the update is complete.

4] Repair Office

One of the best ways to fix the issue is to repair the Microsoft Office. If the flickering is limited to Outlook Office and not happening elsewhere, it can be because of a corrupt file.

Repair Microsoft Office Windows

  • Open Windows Settings (Win + I)
  • Navigate to Apps > Apps & features > Office
  • Click on the Repair button to start repairing Office installation.

Another way to repair Office is using the old Control panel. Navigate to Control Panel > Programs > Uninstall or Change. Select Microsoft Office and then click on the Change button. You will have the option to repair it right away. When using this method, you will have two options; Quick Repair and Online Repair. The latter will take more time and do a much better job.

Repiar office Windows

If this doesn’t work, then you can choose to uninstall it completely and then install it again. The process will ensure that all files are fresh and void of corruption.

How do I turn off graphics acceleration in Office 365?

Not all the applications in Microsoft Office have graphics acceleration or hardware acceleration. While Microsoft Office has an option in the Display section of settings, Outlook doesn’t have it. However, if you are using an older Office version, then the option is available for all the apps.

How do I run a repair on Office 365?

You can repair Microsoft office or any office application from Windows Settings > Apps > Apps & Features > Office. Go to the Advanced options, and then choose to repair. You can also repair using the Control Panel method.

Outlook 365 flickering and flashing [Fixed]

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Alice AUSTIN

Alice AUSTIN is studying Cisco Systems Engineering. He has passion with both hardware and software and writes articles and reviews for many IT websites.

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