In a statement, Dubke said it had been his "great honour to serve President Trump and this administration".
Soon afterward, he tweeted: "Russian officials must be laughing at the USA & how a lame excuse for why the Dems lost the election has taken over the Fake News".
In a resignation note to friends and colleagues, Dubke said it was his "distinct pleasure to work side-by-side, day-by-day with the staff of the communications and press departments".
The Washington Post said that Dubke's last day on the job has not been determined yet, but cited an unnamed official as saying that it could be Tuesday, when he was scheduled to meet with his staff.
His departure comes amid White House plans for a larger strategic shake-up to tackle head-on allegations involving communication between Russian Federation and Trump's presidential campaign, including a "war room" to combat mounting questions and multiple probes. Mr Dubke founded Crossroads Media, a Republican firm that specialises in political advertising.
He resigned on May 18 but offered to stay on his post until the end of the president's first foreign trip, ABC News has learned.
Intel Goes 'Extreme' With New Powerhouse Core X Processors
Intel is facing off with AMD in the battle for share of the high-end computing market, and it has a new weapon in the fight. It is the first day of the event and Intel has already displayed the World's very first 18-core processors for consumers.
USA media reported that Trump is increasingly frustrated at the White House's response to media reaction to his administration's first 100 days in office. He later added: "It's an ongoing conversation, and that's a fair way to put it".
Sources told ABC News that on May 15, three days before he resigned, Dubke, along with press secretary Sean Spicer and principal deputy press secretary Sarah Huckabee Sanders, met with President Trump. More attorneys with deep experience in Washington investigations are expected to be added in the weeks ahead.
Reporters also asked about Jared Kushner's communication with Russian officials. The news site speculated that Trump would likely take more questions directly from the media. The person wasn't authorized to publicly discuss private policy deliberations and insisted on anonymity. Conway said the White House will continue to bring in Cabinet secretaries and other top officials to handle news briefings on topics in their patch.
"Things can't keep going the way they are", a senior Trump administration official told Garrett.
Regardless, for a White House team that's only existed for four months, this represents a rather volatile employment environment.
Trump did not immediately address Dubke's resignation.
She said on Saturday that the result of the "six against one" discussion was "very hard, not to say very unsatisfactory". Very bad for US.
- Nintendo Switch Game Lost Sphear Announced
- Arsenal confirms extension for Arsene Wenger
- Missile Interceptor Collides With Target During Defense System Test
- 'Overwatch' Teases Something New Coming Involving The Horizon Lunar Colony
- Angels MVP Mike Trout out 6-8 weeks due to surgery
- Uber fires star self-driving auto exec at center of Waymo suit
- Lebanese ministry calls for ban of 'Wonder Woman' movie
- President Trump Attends Meeting Of G-7 Leaders In Italy
- Newest Statue on Wall Street: 'Pissing Pug'
- Essential Home with Ambient OS rivals Amazon Echo and Google Home