One executive, speaking anonymously, was blunt about it: "Disaster."
The morning after Lauer's back-to-back interviews of Hillary Clinton and Donald Trump, several high ranking sources at the network said they hear the criticism and agree with at least some of it.
Lauer was widely criticized for failing to fact-check or follow up when Trump falsely claimed that he was opposed to the Iraq war when it started. Some viewers thought Lauer held Clinton to a higher standard than Trump. Several people who were sitting in the audience told CNN that they were frustrated too.
The ratings for Wednesday night's forum were strong, according to preliminary data. But the reviews were pitiful. So what went wrong? That's what journalists both inside and outside NBC are asking now. There is no clear answer.
Lack of preparation is one theory.
New York Times TV critic James Poniewozik wrote Thursday that Lauer seemed "unprepared on specifics of military and foreign policy: "He performed like a soldier sent on a mission without ammunition, beginning with a disorganized offensive, ending in a humiliating retreat."
But Lauer's interviewing skills are second to none. He has hosted thousands of episodes of the "Today" show.
And he had a week to prep for the forum.
The blame does not fall on Lauer alone. NBC News and MSNBC chairman Andy Lack, a longtime friend of Lauer's, was intimately involved in the forum planning and execution. "This should be a black eye for Lack," one of the sources said.