When billionaire Elon Musk posted on X last weekend that all federal employees would soon receive an email demanding details of their work from the past week, senior White House officials — who had not been fully briefed on the plan — were initially caught off guard, multiple sources told ABC News.

Musk’s email would then set off widespread confusion across the federal government. It created tension among members of Trump’s Cabinet, as multiple agency heads told their employees to hold off on replying until they themselves were briefed on the situation.

At one point shortly after the Saturday evening email, sources familiar with the discussions said senior White House staff debated issuing guidance to their own employees, informing them that they did not need to reply. Late Monday night, the Office of Personnel Management said that White House staff were exempt from the exercise, citing the Presidential Records Act.

The lack of communication between Musk and President Donald Trump’s top advisers in the White House, who are responsible for executing his second-term agenda, is the latest in a series of controversial moves by the world’s richest man since he arrived in Washington last month that have begun to divide some of those closest to the president.

Musk’s whirlwind approach — marked by rapid gutting of the federal workforce and dominating national headlines — has sparked a rift among some in the White House and Trump’s inner circle, sources told ABC News. Some close to the president have bristled at Musk’s frenetic pace and his apparent disregard for coordinating with senior officials around the president. Others, however, have expressed support for the tactics and embraced Musk’s fast-paced efforts so far, hailing them as a long-overdue shakeup of a stagnant system.

Press secretary Karoline Leavitt said at a press briefing Tuesday that “the President and Elon, and his entire Cabinet, are working as one unified team, and they are implementing these very common-sense solutions,” adding that more than 1 million federal workers had responded to Musk’s “What did you do last week?” email, including herself. Leavitt said that Musk would attend Trump’s first Cabinet meeting set for Wednesday.

But as Musk has ripped through the federal workforce at a breakneck pace reminiscent of his approach at his own companies, the White House has, at times, first learned of his actions through media reports or his own posts on X instead of through the usual chain of senior staff, sources said, which has ruffled feathers among some top officials who view the billionaire’s methods as increasingly out of control.

But while Musk has some detractors in Trump’s orbit, he has gained support from some of the most powerful voices around the president, including Stephen Miller, White House deputy chief of staff for policy and U.S. Homeland Security adviser, and Katie Miller, a senior adviser to Musk’s Department of Government Efficiency efforts who is married to Stephen Miller, sources said.

Still, even with some in the White House growing frustrated with aspects of Musk’s first few weeks in Washington, sources said there is hesitancy to intervene, given not only the billionaire’s immense wealth but, perhaps more importantly, his vast influence given his larger-than-ever profile and his ownership of X.

Some concerned with Musk have resigned themselves that the Tesla CEO is unlikely to be reined in anytime soon and are instead focused on managing the situation as best they can until his special government contract comes to an end later this year, though it is not immediately clear if Musk plans to leave Washington then, either.

“Some love it, some can’t wait for [Musk] to leave — bottom line is he’s not going anywhere anytime soon,” a source familiar told ABC News.

In response to this story, a senior White House official told ABC News, “Any insinuation that senior leadership in the Trump White House is not properly being advised on the actions of DOGE is completely false. As an SGE, Elon Musk works directly with the president of the United States and senior members of his team to coordinate the effective and efficient execution of the president’s agenda.”

“The American people widely support the mission of DOGE. Look no further than the Harris poll in which a vast majority of Americans support the mission of DOGE. Anyone who is seen as objecting to this mission in either party is objecting to long overdue change in Washington. If you’re not going to be a part of the solution, you are now a part of the problem,” the official added.

The South African-born businessman spent $270 million to help Trump get reelected. When Trump returned to office on Jan. 20, he empowered Musk to slash federal spending and make key decisions about the future of the U.S. as a lead adviser in the newly created DOGE.

ABC News previously reported that Musk initially wanted an office in the West Wing, but told people he thought what he was given was too small, multiple people familiar with his comments told ABC News, and has since taken up offices in the Eisenhower Executive Office Building, where he brought in sleep pods for his young staffers as they worked deep into the night.

Musk has been designated as a special government employee. His companies Tesla and SpaceX have been awarded $18 billion in federal contracts over the last decade. Some of this money has come from agencies the president asked Musk to review, but Musk dismissed the notion that there could be conflicts of interest.

“No, because you have to look at the individual contract and say, first of all, I’m not the one, you know, filing the contract — it’s people at SpaceX,” he told ABC News earlier this month.