How To Troubleshoot Browser and Kernel Isolation Issues | patrick marshall


Q: Ever since I installed Windows 11 on my Surface Pro 6, CNN videos are not playing. I followed the troubleshooting instructions in a YouTube video, but that still didn’t fix the problem. On my work laptop, which has Windows 10, the videos play. What do I need to do to get videos to play properly on my Surface?

Sherry Wyson

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A: There is no indication that Windows 11 is the cause of your problem. I have Windows 11 running on three computers and have no issues with CNN videos.

When something doesn’t work as expected in one browser, my first move is to try it in another browser. This can at least focus your troubleshooting. If the videos are playing in another browser, go back to the first browser and clear its cache. The steps to clear the cache are different depending on the browser, so I can’t provide specific instructions. You can do a quick search on the internet.

If the problem persists, disable all extensions in the browser. If that solves the problem, you can then add the extensions one by one until you find the culprit.

If CNN videos also couldn’t be played in another browser, the problem could be with your computer details. Make sure your graphics card drivers are up to date. You can do this by going to Control Panel and calling Device Manager. Locate your graphics card under “Display Cards” and click on it. Next, click on the Driver tab and then on the “Update Driver” button.

Finally, if you are not running an anti-malware application, I recommend installing one and running a full scan.

Q: I’m using Windows 11 on Surface 2. Windows Defender alerted me to a kernel isolation issue with memory integrity. The problem seems to be incompatible drivers which the update did not resolve. Microsoft suggests that a compatible driver is available from the driver manufacturer, but that is way beyond my skill set. My question is: how vulnerable is my computer? I currently use Malwarebytes.

Kim Robson

A: Windows 11 uses Core Isolation and Memory Integrity Checking to create secure areas of system memory that are isolated from the rest of the operating system. The operating system can run system processes and security software in this secure area, protecting it from hacker or malware access.

The compromise? Some decrease in computer performance. This is why Microsoft did not automatically configure Windows 11 with Basic Isolation enabled until recently. The good news is that the impact is small and most users probably won’t notice it. But I have disabled central isolation on the computer I use for video editing because I need to get the most performance I can get from this computer.

Core isolation and memory integrity technologies require specific hardware and drivers. Since you’re using a Microsoft computer, they should be able to tell you about driver compatibility for your specific model.

In the meantime, I wouldn’t worry too much about it. Like any computer over two years old, your computer is more vulnerable to certain types of attacks. Unless you are a financial institution, government agency or other high profile target, common sense online behaviors – do not visit untrusted websites, do not click on links in untrusted emails. reliable, etc. – provide more practical protection than central isolation.


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