A new US law banning TikTok took effect hours after the popular app went offline across the country.

A message displayed on TikTok late Saturday for U.S. users said a law banning TikTok had been enacted, meaning "you can't use TikTok now."

The video-sharing app was banned over concerns about its links to the Chinese government. It was given until January 19 to sell to an approved U.S. buyer to avoid a ban.

President Joe Biden has said he will leave the issue to his successor, Donald Trump. The president-elect said he would "most likely" give TikTok a 90-day reprieve from the ban after taking office on Monday.

"A 90-day extension is the most likely thing to get done because it's appropriate," Trump told reporters. Saturday on NBC News.

"If I decide to do it, I'll probably announce it on Monday."

Users reported that the app had also been removed from Apple and Google's U.S. app stores, and TikTok.com was not showing videos under the terms of the ban.

"We are fortunate that President Trump has said he will work with us on solutions to restore TikTok after taking office," a message displayed on the app reads.

This is the first time a major social media platform has been banned in the United States.

The U.S. Supreme Court on Friday upheld a law passed last April banning the app from being sold in the U.S. unless its Chinese parent ByteDance sells the platform by Sunday, which ByteDance did not do.

TikTok argued that the law violated free speech protections for the country's 170 million users.

After the ruling, TikTok CEO Shou Zi Chew appealed to Trump, thanking him for his "commitment to working with us to find a solution."

Mr. Zhou is expected to attend Trump's inauguration on Monday.

in the next few hours Go offline on social media platformscontent creators have been posting videos saying goodbye to their followers.

Creator Nicole Bloomgarden told the BBC that not using TikTok would result in a significant pay cut.

Another user, Erika Thompson, said educational content on the platform would be the community's "biggest loss."

Earlier on Saturday, TikTok users received a message saying the law would "force us to temporarily be unable to provide service. We are working to restore service in the United States as soon as possible."

Meanwhile, a government minister told the BBC on Sunday that the UK had no plans to ban TikTok.

"We will not go down the same path as the Americans unless or until... we are concerned that UK interests are at risk and then of course we will keep it under review," said Darren Jones, chief secretary to the Treasury.

The application is Use of UK parliamentary and government equipment prohibited 2023 for safety reasons.

But Jones told Sunday with Laura Kuenssberg "For a consumer who wants to post a video of a dancing cat, this doesn't seem like a security threat to me".