KB4494441 blocks YouTube videos on Edge browser for some users

Madalina Dinita
by Madalina Dinita
Managing Editor
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KB4494441 YouTube bugs

If you installed the latest Windows 10 v1809 updates, you may encounter some nasty bugs when playing YouTube videos.

Quite a large number of users who installed KB4494441 reported getting blank rectangular boxes on YouTube. As a result, they can’t play any videos.

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It is worth mentioning that this problem usually affects Microsoft Edge. And here’s how one user describes this issue:

When I sign-into YouTube.com on Windows 10 Edge Browser, a page of blank rectangular boxes are displayed, see attached screenshot.
he issue started after the May 14, 2019—KB4494441 (OS Build 17763.503). This is happening to 2 Windows 10 Pro PCs. YouTube displays correctly before the Sign-In and on Internet Explorer.

So, as you can see this bug apparently affects only Windows 10 Pro machines. If you’re using another browser, you should be fine.

How to fix white boxes on YouTube after installing KB4494441

In other words, if you want to install the latest Windows 10 v1809 updates and still be able to play YouTube videos, you should temporarily switch to another browser — if Edge is your default browser.

If you don’t know what browser to install, we suggest downloading UR Browser which is excellent for playing video content on the web. UR Browser automatically blocks cookies and third-party trackers so as to ensure smooth video playback. We guarantee there will be no buffering issues on UR.

Editor's recommendation
ur browser
  • Fast page loading
  • VPN-level privacy
  • Enhanced security
  • Built-in virus scanner

Alternatively, if you prefer to stick to Edge, you could also try to reset the browser and see if this quick troubleshooting step fixes your problem.

Here are the steps to follow:

  1. Windows Settings > Apps > Apps & Features > Microsoft Edge
  2. Now select Reset and Repair and wait until the process is completed.

We hope this works for you.

Have you encountered any other bugs after installing KB4494441? Let us know in the comments below.

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