Then wait for a while and the blocked video will play automatically. Paste the URL and click on the GO! button to unblock YouTube video. Copy the video link and go to YouTube Unblocked. Head to the YouTube website and find the blocked video you’re looking for. It’s free and you can watch YouTube blocked videos without registration. Apart from that, it also supports unblocking videos from other websites including Twitch, Facebook, Instagram, Twitter, Dailymotion, etc. This web proxy allows you to unblock YouTube at school. A list of alternative YouTube unblockers can be found over here.YouTube is often blocked in office or school. Just to be on the safe side, Ghacks provides detailed removal instructions over here. The configuration I got from the server is in the attachement response.json (captured with Wireshark). The actual file list to update comes as response from the server and is therefor not part of the add-on. It checks for a 'whitelist', so that - seemingly - no other files can be overwritten. The function updateConfigFile() downloads files from a web server and places them onto the hard drive of the user. Looking at the code of the add-on 'YouTube Unblocker', I found the responsible code in the file following line 138. The download was another add-on which Avast categorized as malware.

Immediately after installing my antivirus software (Avast) warned me of a blocked download from a third-party website associated with neither Mozilla nor the add-on. I installed the add-on 'YouTube Unblocker' version 0.6.20 from AMO. The issue was brought to light by a user via the Bugzilla bulletins:

The browser maker added YouTube Unblocker to its blocklist, which means it will also be automatically removed from Firefox.

Mozilla announced it has banned YouTube Unblocker, a popular extension that provided a proxy connection to let users view YouTube clips with a geographic restriction, because the add-on tampered with Firefox security preferences and installed a piece of malware named Adblock Converter.

Youtubeunblocker