The 63-year-old was suspended from her morning programme on BBC Scotland in October after she was accused of shouting and swearing at colleagues.
Adams had denied any wrongdoing and suggested her “assertiveness” in the workplace had been mistaken for bullying.
However, some complaints lodged against Adams have been upheld by those conducting the internal BBC investigation and Adams will not return to host her radio show, according to The Times.
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The newspaper reported that some other allegations were found not be substantiated.
The complaints saw the long-standing broadcaster accused of using an “abhorrent swear word” at a colleague, while in another incident, Adams is alleged to have thrown a pen at a producer in frustration over an upcoming show.
It was also claimed that Adams berated an intern over their ability to do their job.
It was reported that Radio Scotland’s head of audio and events, Victoria Easton Riley, had become concerned by Adams’s conduct during a routine meeting attended by BBC Scotland’s staff at the broadcaster’s Pacific Quay headquarters in Glasgow, last year.
“After witnessing Kaye’s behaviour first hand, Victoria started talking to other members of staff who worked on her programme,” one insider told The Times.
“The floodgates then broke and she was suspended. This was never about one single incident. The investigation looked at her behaviour over many years.”
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The complaints were reportedly raised under the BBC’s “Call it Out” scheme, which was established after MasterChef hosts Gregg Wallace and John Torode were embroiled in controversy.
“There is no way back for Kaye now,” a source told The Times. “Her time at BBC Scotland is at an end.”
When asked about the investigation, a BBC Scotland spokesperson said: “We do not comment on individuals.”
However, they added: “With regard to the presentation line-up on Mornings With, Kaye Adams will not be returning to this role.
“In the immediate future, Connie McLaughlin will continue to present Mornings With on Mondays to Wednesdays, with Stephen Jardine presenting on Thursdays and Fridays.”
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Adams, who also presents Loose Women on ITV, hosted Mornings with Kaye Adams up until last year.
She previously hosted the daily phone-in programme Call Kaye between 2010 and 2015, before fronting The Kaye Adams Show.
Adams has previously denied the claims against her, saying she had been “blindsided” by the allegations.
“I am not the person that I was painted as,” she said.