Hello, Karen Gunn
Yes, I meant Microsoft Edge. I’m glad to hear that YouTube videos are playing perfectly there. Even though you’ve had the extensions for years, they can sometimes cause issues. Try disabling all extensions and see if the problem persists. And sometimes, the user profile can get corrupted. Try creating a new Chrome profile and see if the issue persists: How to use Chrome with multiple profiles - Computer - Google Chrome Help
Disclaimer: Microsoft provides no assurances and/or warranties, implied or otherwise, and is not responsible for the information you receive from the third-party linked sites or any support related to technology.
It’s also possible that since both YouTube and Chrome are Google products, there might be specific optimizations or updates that sometimes cause unexpected issues. These optimizations are generally intended to enhance performance and compatibility, but occasionally, they can lead to conflicts or bugs, especially if there are recent updates or changes. Ensure both Chrome and YouTube are updated to their latest versions. And sometimes, using Incognito mode can bypass certain issues related to cookies or extensions.
If the problem persists, Use Chrome’s feedback tool in Chrome settings to report the problem to Google. They might release a fix in future updates.
Yuhao L
Microsoft Community Technical Support