Safari 16.3 (on iOS) not loading youtube videos correctly

Hi socks_83,

The following steps address what you're describing specifically, and should provide a solution:

Delete history, cache, and cookies

* To clear your history and cookies, go to Settings > Safari, and tap Clear History and Website Data. Clearing your history, cookies, and browsing data from Safari won't change your AutoFill information.

* To clear your cookies and keep your history, go to Settings > Safari > Advanced > Website Data, then tap Remove All Website Data.

* To visit sites without leaving a history, turn Private Browsing on.

You can find these steps along with other information that may be helpful, here: Clear the history and cookies from Safari on your iPhone, iPad, or iPod touch - Apple Support

If you have followed the steps correctly and you still have the issue, let us know if you get any specific alerts or error messages when trying, as those may help us determine what might be causing the issue.

We also recommend restarting your device and keeping it updated as those steps assure you have cleared out any minor software issues and are running the most current version.

Restart your iPhone - Apple Support

Update your iPhone or iPad - Apple Support

Cheers!

Thanks for replying, socks_83, and that additional info, it really helps! Just to be curious, do videos in the YouTube app work as expected:

YouTube: Watch, Listen, Stream on the App Store

This can help isolate this further. Also, have you tested this on both Wi-Fi and cellular data? Is there a difference?

Another thing to check is if a VPN or security software could be interfering with expected behavior: Check VPN (Virtual Private Network) and third-party software to help resolve network connectivity issues - Apple Support

Have a great day and thanks for using the Apple Support Communities!