Meta won a legal victory on Wednesday against a former employee who published an explosive, tell-all memoir, as an arbitrator temporarily prohibited the author from promoting or further distributing copies.

Sarah Wynn-Williams last week released “Careless People: A Cautionary Tale of Power, Greed, and Lost Idealism,” a book that describes a series of incendiary allegations of sexual harassment and other inappropriate behavior by senior executives during her tenure at the company. Meta pursued arbitration, arguing that the book is prohibited under a nondisparagement contract she signed as a global affairs employee.

During an emergency hearing on Wednesday, the arbitrator, Nicholas Gowen, found that Meta had provided enough grounds that Ms. Wynn-Williams had potentially violated her contract, according to a legal filing posted by Meta. The two parties will now begin private arbitration.

In addition to halting book promotions and sales, Ms. Wynn-Williams must refrain from engaging in or “amplifying any further disparaging, critical or otherwise detrimental comments,” according to the filing. She also must retract all previous disparaging comments “to the extent within her control.”

The filing does not limit the publisher, Flatiron Books, or its parent company, Macmillan, from continuing publication of the memoir, a spokeswoman for Macmillan said, adding that the company will continue to promote the book.

Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.

Thank you for your patience while we verify access.

Already a subscriber? Log in.

Want all of The Times? Subscribe.