Fix for Youtube: an error has occurred. Please try again later. or Youtube videos do not play.

Try this solution.

  1. Disable or remove the addon "Video DownloadHelper". (Tools > Addons > button click on turn off or delete Video DownloadHelper)
  2. Restart Firefox.

I tried to find an acceptable solution for several days because I had this problem. This solution worked for me. I posted the question as a solution, hope it helps someone. Addons can also create problems.

qquito and a few others who have had the same problem, have been provided a solutions of workarounds like the decommissioning of the version of flash player. There is no need for a version of Flash Player. There seems to be a conflict between the new version of Flash Player and Video DownloadHelper.

Thank you.

Tags: Firefox

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