Users in the U.S. cannot access several apps owned by Chinese company ByteDance as new legislation comes into effect.

TikTok went dark for users across the U.S. late Saturday as the app notified users of a ban that went into effect just days before President-elect Trump's inauguration.

TikTok said the app will have to “go dark” in the United States on Sunday barring a last-minute intervention from the Biden administration to halt enforcement of a federal ban.

TikTok went offline in the United States Saturday night, less than two hours before a ban was slated to go into effect.

At the moment, there are "no plans" for a TikTok ban in the UK, a government spokesperson said on Saturday. "We engage with all major social media companies to understand their plans for ensuring the security of UK data and to ensure they meet the high data protection and cyber security standards we expect."

TikTok’s app and website effectively shut down in the United States late Saturday just before a nationwide ban against the video-sharing platform came into force. The company showed its millions of American users a pop-up message that thanked President-elect Donald Trump for indicating he will work with the company on a solution when he takes office on Monday.