Apple tonight updated its beta testing app TestFlight, seemingly to block U.S. users from accessing the TikTok beta on the iPhone and other devices.

If it feels like TikTok has been around forever, that’s probably because it has, at least if you’re measuring via internet time.

With President-elect Trump adding uncertainty around whether a TikTok ban will go into effect, the focus is now turning to companies like Google and Apple, who are expected to take the popular video sharing app off their platforms in just two days.

TikTok says it is officially going dark in the United States now that a federal ban of the app is going into effect. Around 6 PM Pacific time, the app began notifying people in the US, including Verge staffers,

TikTok's U.S. ban arrived earlier than expected, logging users out abruptly on Saturday night before midnight ET. See how users are reacting to the sudden shutdown.

Users were unable to access TikTok Saturday, instead seeing a pop-up message on their screens saying "a law banning TikTok has been enacted."

Users in the U.S. who opened the app were greeted with a message that read, "Sorry, TikTok isn't available right now."

But TikTok said after the court ruling on Friday that it “will be forced to go dark” if the administration didn’t provide a “definitive statement” to the companies that deliver its service in the U.S.

"We are fortunate that President Trump has indicated that he will work with us on a solution to reinstate TikTok once he takes office," the TikTok landing page reads

TikTok’s ban marooned over 170 million monthly users who made the wildly addictive short-form video app a central part of their daily lives.

A looming ban on TikTok set to take effect on Sunday presents a multibillion-dollar headache for app store operators Apple and Google.