Queen Elizabeth II has canceled her planned engagement at the U.N.

climate conference, accepting doctors' advice to rest, Buckingham Palace said Tuesday.

QUEEN ELIZABETH BACK HOME AFTER OVERNIGHT HOSPITAL STAY FOR 'PRELIMINARY INVESTIGATIONS'.

The news came after the sovereign held virtual audiences Tuesday at Windsor Castle — the first since revelations that her doctors ordered her to rest last week.

20 for "preliminary investigations." She returned to her Windsor Castle home at lunchtime the next day.

The palace said the 95-year-old British monarch went to the private King Edward VII's Hospital in London last week for ‘preliminary investigations.’.

The queen underwent the medical tests after she canceled a scheduled trip to mark 100 years since the creation of Northern Ireland, and the palace said she had "reluctantly" accepted advice to rest for a few days.

QUEEN ELIZABETH SPENDS NIGHT IN HOSPITAL AFTER GIVEN ADVICE TO REST, PALACE SAYS.

The palace said she returned to her Windsor Castle home at lunchtime last Thursday, 'and remains in good spirits.'.

QUEEN ELIZABETH WON'T STEP DOWN, WILL INSTEAD ‘PACE HER ENGAGEMENTS,’ FORMER PRESS SECRETARY CLAIMS.