When Harry celebrated his 40th birthday in September, however, King Charles and Prince William both acknowledged his day with a social media tributes. Middleton even celebrated brother-in-law's milestone day with a phone call, a source told Express.

Here's which phone call spelled the end of Prince Harry being trusted by the King Charles and the rest of the family in any compacity.

Any potential reconciliation between Prince William and Prince Harry hinges on King Charles III’s approval and involvement. A royal insider revealed that efforts to repair their strained relationship

Despite being King, the monarch is often seen showing affection to his grandchildren. When Prince William, Princess Kate and their three children Prince George, 11, Princess Charlotte, nine, and Prince Louis, six, came to Coronation rehearsals, behind-the-scenes footage showed the King warmly embracing all three children.

King Charles reportedly needs Prince William on board in order to reconcile with his younger son, Prince Harry. He can't risk doing it alone.

Prince Harry recalled his firm response after King Charles didn't let Meghan Markle see the Queen on her deathbed.

Kate Middleton and Prince William are celebrating King Charles' birthday! The King turned 76 on Thursday, Nov. 14, and the Prince and Princess of Wales, both 42, were among the first to send social media tributes.

The Prince and Princess of Wales have shared a fun photo of the King to mark his 76th birthday, with royal fans praising William and Kate for the choice of snap

Birthday wishes are in order for King Charles III as the beloved royal celebrates his 76th year on Earth today! Tributes on behalf of the beloved King's special day, shared by friends and acquaintances from across the globe,

Prince Charles made a heartbreaking plea to his warring sons Prince William and Prince Harry when their relationship was at its lowest point, Harry has revealed