Video Won't Play? 9 Common Causes and How to Fix Them

Published 7 October 2026 · All guides

A video that refuses to play is one of the most frustrating problems on the web, mainly because the error messages say so little. The good news is that almost every playback failure comes down to a handful of causes. Work through this list from the top; the first items are the most common and the quickest to check.

1. The link or play address has expired

Cloud providers hand out temporary addresses for their files, and players like ours create time-limited play addresses on top of that. If a video worked earlier and now shows an error, or stops partway after a long pause, the address has probably expired. Load the original share link again to get a fresh one. This fixes more problems than everything else on this list combined.

2. The file was removed or sharing was turned off

If the owner deletes the file, moves it, or stops sharing it, the link stops working for everyone. You will typically see a "not found" or "no files" message. Only the owner can fix this by sharing the file again.

3. The connection is too slow for the video's bitrate

Constant buffering usually means the network cannot deliver data as fast as the video consumes it. A 1080p video can need 5–8 Mbit/s or more; a weak mobile signal or congested Wi-Fi may not keep up. Try moving closer to the router, switching from mobile data to Wi-Fi (or the other way round), or pausing for thirty seconds to let the buffer fill before you continue.

4. The browser cannot decode the video's codec

A file can download perfectly and still show a black screen, or play sound without picture. That means the browser does not support the codec used inside the file. H.264 video with AAC audio plays almost everywhere; HEVC (H.265) and some older codecs do not play in every browser. The video formats guide explains the difference between a container like MP4 and the codec inside it. If a file will not decode, download it and open it in a desktop player such as VLC, which supports far more codecs than any browser.

5. An extension or blocker is interfering

Ad blockers, privacy extensions and download managers sometimes intercept video requests or block the scripts a player needs. Open the page in a private window with extensions disabled. If the video plays there, re-enable your extensions one at a time to find the culprit, then add an exception for the site.

6. A VPN, firewall or filtering DNS is blocking the request

Workplace and school networks, some public Wi-Fi and filtering DNS services block video traffic or particular domains. If a video fails only on one network, that network is the likely cause. Try another connection, or temporarily disable the VPN or custom DNS to test.

7. The browser is out of date

Old browsers lack modern video features and security certificates. Updating Chrome, Firefox, Edge or Safari to the current version resolves a surprising number of playback errors, especially on older phones that have not updated in a long time.

8. The device is low on memory or storage

On phones with many open apps or nearly full storage, the browser may be killed in the background or fail to buffer. Close apps you are not using and free up some space, then reload the page.

9. Autoplay or sound is blocked by the browser

Browsers block videos from starting automatically with sound. If a video appears frozen on its first frame, press play yourself. If it plays silently, check that the tab is not muted and that the player's volume is up.

Still stuck?

Note exactly what you see — the error text, whether it happens on one file or all of them, and on which device and browser — and contact us using the details on the About page. Specific details let us find the cause much faster than "it doesn't work".