Symptoms
When you try to comment on a YouTube video, a pop-up window briefly appears and then disappears quickly. You are unable to post the comment or reply to an existing comment.
Cause
Google requires you to enable third-party cookies in your browser's settings before you can comment on YouTube videos.
Resolution
Any information or links in this article are merely provided as a convenience or informational resource. They do not imply nor represent an endorsement by Texas Tech University or its affiliates. For additional assistance, please contact the manufacturer/provider of the product/service or your preferred third-party support provider.
Enable third-party cookies in your browser's settings. Then, refresh the page on YouTube.
Outcome
You will be able to comment on YouTube vidoes.