The judge said the ban would affect the rights to amend WeChat users as it removes the social media platform.
Donald Trump’s plan to block the download of the Chinese messaging and payment application WeChat was blocked by a state judge in California for the first reasons for the amendment.
The decision puts a temporary limit on presidential administration that could block the program on Sunday, although Mr Trump and his administration have described it as a national security threat.
Judge Laurel Beeler said the government’s move would affect the rights to amend WeChat users – as the app ban removes their social networking site.
WeChat is popular with many Chinese-speaking Americans and serves as a way of life for friends, family, customers and business contacts in China.
Owned by Chinese tech giant Tencent.
The first decision against the US government’s ban was brought by a non-profit organization called the US WeChat Users Alliance, which said it had no affiliation with Tencent.
The group, which has well-known Chinese and American lawyers, said the high order risked violating the constitutional rights of 19 million regular system users in the country.
According to the US government, WeChat became a national security threat by giving the Chinese Communist Party the power to collect aggressive information about American citizens.
The Department of Justice says the data includes “network activity, location data, and browsing and search documents”, data for social networking applications collected from their users, albeit uncommon in China.
Tencent denies the allegations, and says the messages in its app are confidential.
The decision follows Donald Trump claiming he has given his “blessing” to a proposed agreement that could prevent another Chinese-owned app, TikTok, from being banned by the current law.
He told reporters at the White House that he supported an agreement with Oracle and Walmart that would set up a new company to oversee the operation of TikTok in the US.
Mr Trump said the new company would “be fully owned by Oracle and Walmart”.
People in the US were expected to be banned from downloading video sharing programs on Sunday, following White House concerns about the safety of user information.
An earlier statement from the U.S. Department of Commerce stated: “The Chinese Communist Party (CCP) has indicated methods and objectives for using these programs to threaten national security, foreign policy, and the US economy.”
He added that applications pose “unacceptable risks” to national security.
But the president has now said he accepts the agreement “in a sense” and security will be “100%”, adding: “I have given my agreement my agreement.”