Microsoft confirmed that negotiations are still under way to purchase a Tic-Talk branch in the United States from its Chinese parent company, Bit Dance.
It said in a statement that after talks between its chief executive Satya Nadella and Trump, the company would continue negotiations with a view to reaching an agreement by September 15 at the latest.
In light of the political and commercial tension between the United States and China, Washington accuses the application for months of being a tool used by Chinese intelligence to monitor, while Tik Tok strongly denies sharing any data with Beijing.
The tone escalated at the end of the week, as Trump announced Friday evening banning the application, opposing it until it was repurchased by an American company.
US Treasury Secretary Stephen Mnuchin warned Sunday that Tik Tok should be "sold or frozen" in the United States, while Secretary of State Mike Pompeo announced that Trump would take immediate measures "in response to the threats to national security through software linked to the Communist Party of China."
The music and comic video sharing platform is one billion users in the world, most of them are young men. In China, byte Dance operates an application that follows the same principle but is separate from Tik Tok and its name is different.
Microsoft said in its statement that the deal would be subject to "a full security assessment and should bring economic benefits to the United States, including the US Treasury."
If the purchase is made, the application will be owned and operated by the American group in the United States, Canada, Australia and New Zealand, and minority shareholders will be able to join the process.
The Seattle-based group promised that "Microsoft will verify the transmission and retention of all data of American Tik Tok users in the United States."
Social application has sought over the past months to demonstrate that its identity and operations are rooted in the United States.
On June 1, Kevin Meyer, a former official in charge of the streaming platforms at Disney Group, took over the app.
In early July, Tik Tok suspended its activities in Hong Kong because of the National Security Law that China had imposed on the former British colony, which gives the police more powers, especially in the area of surveillance.
Vanessa Papas, official responsible for the Tik Tok branch in the United States, announced in a video on Saturday, "We will not be absent," seeking to reassure the users of the application after the Trump announcement.
"The United States will be the biggest loser if Tik Tok is banned," said Daniel Castro, vice president of the Institute for Information Technology and Innovation near technology giants.
"Millions of Americans, including many of Trump's supporters, use it to create and share content (...) and all of his servers are outside of China, and there is no evidence that it poses a threat to national security," he said.