The choice came a week before President Donald Trump's deadline to ban it in the U.S. Microsoft said in a Sunday statement that TikTok's parent company, Bytedance, "let us know today they would not be selling TikTok's US operations to Microsoft."
The Trump administration has threatened to ban TikTok by mid-September and ordered ByteDance to sell its U.S. business, claiming national-security risks due to its Chinese ownership. The government worries about user data being funneled to Chinese authorities. TikTok denies it is a national-security risk and is suing to stop the administration from the threatened ban.
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TikTok didn't immediately return requests for comment Sunday.
Microsoft said Sunday it was "confident our proposal would have been good for TikTok's users, while protecting national security interests." The company said it "would have made significant changes to ensure the service met the highest standards for security, privacy, online safety, and combating disinformation."
The video featured is from a previous report.