Help center · Courses & learning
When a video will not play
Updated Aug 2026 · 2 min read
Try a refresh first. It fixes most one-off playback glitches, and your position in the video is saved, so you will not lose your place.
If it keeps happening
1.Open the lesson in a private or incognito window. If it works there, a browser extension is the cause, and ad blockers and privacy extensions are the usual ones.2.Update your browser to the current version.3.Try a different network. Office, school and hotel networks sometimes block video hosts.4.Try another device. That tells us whether the problem is the account or the machine.
Still stuck
Email support and say which lesson, which browser, and what you already tried. That is usually enough to settle it in one reply.
The first lesson of every course has no video on purpose. It is a written overview, so an empty video area there is not a fault.
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