He repeated that Acosta was a "very rude person", adding, "the way you treat Sarah Huckabee is terrible", referring to his White House press secretary.
Acosta attempted to ask another question about the Mueller probe, but Trump dismissed him by repeatedly saying, "That's enough", and motioning for Acosta's microphone to be handed to another reporter.
It is unclear whether Acosta will be turned away again on Thursday.
The White House's treatment of Acosta drew wide rebuke from press freedom and journalism organizations.
He was trying to reenter the White House grounds for a live shot on "Anderson Cooper 360" when he was stopped by Secret Service officers.
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"If the White House Press Corps doesn't do anything about the Acosta situation right now, if they don't boycott or take a stand, we are on the road to full authoritarianism", actor Kumail Nanjiani said, apparently with total sincerity.
That's when CNN executive Matt Dornic got involved, alleging that Sanders was spreading "actual fake news" by using a "doctored" video to make Acosta's bad behavior look worse.
No one is suggesting that Acosta threatened President Donald Trump. "We will not tolerate the inappropriate behaviour clearly documented in this video". Original video of the incident shows the woman trying to grab the microphone, as Acosta's hand brushes her arm.
"Contrary to CNN's assertions, there is no greater demonstration of the President's support for a free press than the event he held today".
United States midterm elections poised for verdict on Trump's America
Some 35 Senate seats were in play, as were nearly 40 governorships and the balance of power in virtually every state legislature. Races to watch include Democrat Beto O'Rourke's challenge to Senator Ted Cruz in traditionally deep-Republican Texas.
Acosta steadfastly refuted Sanders' accusation, which she made via Tweetstorm, calling it "a lie". She went on to say that she, in general, doesn't like when men touch her without permission, but said what Acosta did was not assault.
Acosta was one of the first reporters Trump called on.
"Plenty to criticize Acosta about", Ross wrote, "but he did not "place his hands" on the intern". Sanders alleged that the video showed Acosta acting in an "unacceptable" manner toward the young woman.
Prior to Sanders posting her tweet, the beginning, un-zoomed in part of the video was shared by InfoWars, causing many people to speculate that the conspiracy-spreading outlet was the source of the video.
CNN said in a statement that Sanders "lied" on Wednesday night.
During the heated exchange, the US President accused the CNN reporter of being the "enemy of the people".
CNN called the credential revocation an "unprecedented" move and "a threat to our democracy". "They are not only unsafe, they are disturbingly un-American", the network said, voicing its support for Acosta and "journalists everywhere". "It's deceptive, unsafe and unethical".
Senior journalists represented by the association also spoke up. "I've never seen a president do anything like that". "You are a rude, bad person, you shouldn't be working for CNN", Trump said.
The president complained that the media did not cover the humming economy and was responsible for much of the country's divided politics. It was covered by every major outlet in the US and beyond.
Officials later confirmed that his credentials had been revoked.