TikTok has gone offline in the US, hours before a new law banning the platform was due to come into effect.
A message appearing on the app for US users said a law banning TikTok had been enacted, meaning "you can't use TikTok for now".
"We are fortunate that President Trump has indicated that he will work with us on a solution to reinstate TikTok once he takes office," it read.
It comes after the social media platform warned it would "go dark" on Sunday unless the outgoing Biden administration gave assurances the ban will not be enforced.
President-elect Donald Trump has said he would "most likely" give TikTok a 90-day reprieve from a ban once he takes office on Monday.
Users reported the app had also been removed from both Apple and Google's US app stores and TikTok.com was not showing videos.
"The 90-day extension is something that will be most likely done, because it's appropriate," Trump told NBC News on Saturday.
"If I decide to do that, I'll probably announce it on Monday."
The White House said that it was up to the incoming administration to take action.
"We see no reason for TikTok or other companies to take actions in the next few days before the Trump administration takes office on Monday," press secretary Karine Jean-Pierre said in a statement.
