KEY POINTS
  • The audio-only social media app Clubhouse appears to have been blocked in China.
  • The discussion app, which lets people chat with their voices instead of written messages, has boomed in popularity over the last few months.
  • Some Clubhouse users in China are now being shown an error message when they open the app. The message reads: "An SSL error has occurred and a secure connection to the server cannot be made."
The invitation-only audio-chat social networking app Clubhouse is pictured on a smartphone on January 26, 2021 in Berlin, Germany.

The audio-only social media app Clubhouse appears to have been blocked in China.

Queeny Li, a communications professional based in Shenzhen, and Michael Norris, a tech analyst in Shanghai, told CNBC that the Clubhouse app no longer works for them.