The actress Rose McGowan said in an Instagram post overnight that her Twitter account had been temporarily locked following a series of posts about Harvey Weinstein’s misconduct, including toward her.
“TWITTER HAS SUSPENDED ME. THERE ARE POWERFUL FORCES AT WORK. BE MY VOICE,” Ms. McGowan wrote on her Instagram page, shortly after midnight Eastern time on Thursday. She included a snapshot of a message from Twitter saying she would only be able to send direct messages from her account unless she deleted tweets that violated Twitter rules.
The screenshot announced a temporary freeze that prevented her from tweeting, retweeting or liking for 12 hours. Unlike a full suspension, this measure leaves her account visible.
The message in the screenshot said that the lock was in effect because Ms. McGowan’s account had “violated the Twitter rules.”
The full statement said:
“We have been in touch with Ms. McGowan’s team. We want to explain that her account was temporarily locked because one of her tweets included a private phone number, which violates of our Terms of Service. The tweet was removed and her account has been unlocked. We will be clearer about these policies and decisions in the future. Twitter is proud to empower and support the voices on our platform, especially those that speak truth to power. We stand with the brave women and men who use Twitter to share their stories, and will work hard every day to improve our processes to protect those voices.”
Ms. McGowan reached a $100,000 settlement with Mr. Weinstein in 1997 following a hotel room incident at the Sundance Film Festival, and in recent days has been vocal in her support of women who have stepped forward to reveal that the producer had sexually harassed them or worse.
On Tuesday, after the actor Ben Affleck tweeted that the allegations against Mr. Weinstein “made him sick,” Ms. McGowan called him a liar, saying he had long been aware of what Mr. Weinstein had done. She has also attacked Hollywood players who failed to criticize Mr. Weinstein, writing in a tweet, “you all knew.”
Many Twitter users expressed outrage over Ms. McGowan’s account being locked. The actress Jessica Chastain asked for clarification on which rules Ms. McGowan violated, adding, “Asking for multiple victims of sexual violence.”
The actress Jamie Lee Curtis wrote: “And now THIS? You allow Twitter freedom to our president but you silence a woman speaking out about sexual harassment?”
Jack Dorsey, Twitter’s chief executive, wrote that the company needs to be “a lot more transparent” to build trust.
Twitter has previously stated that tweets that are “newsworthy” remain on the site even if they violate its terms of service rules. In recent months, many have asked why President Trump’s account hasn’t been suspended despite seeming to threaten other countries with violence. Threats of violence are not allowed on the platform, according to the Twitter Rules, a set of behavioral guidelines for users that include a prohibition against “harassment” and “hateful conduct.” The company wrote that Twitter would not suspend Mr. Trump in part because of “newsworthiness.”
The company is now under increased scrutiny after revelations that it allowed hundreds of Russian-linked accounts to flourish on the site. The Russian-linked accounts seemed intent on inciting partisan furor and electing Mr. Trump.
Twitter has been long criticized for taking too laissez-faire an approach to monitoring content that many of its users see to be in violation of the terms of service and Twitter Rules. Some prominent users have claimed the site is a hostile space for women. The harassment campaign known as Gamergate flourished on the site for years, and when the company does suspend or ban an account it is often after immense pressure from users.