King Charles is to "send a clear message to Prince Andrew" amid their bitter feud with a Christmas decision.
The Royal Family are seen annually on their walk to church at Sandringham every Christmas morning.
Andrew has made the public journey alongside King Charles and Queen Camilla for the past two years.
However, the Duke of York is in a long-standing feud with his brother over his residency in Royal Lodge, which has cast his attendance into doubt.
Andrew has made the public journey to the church alongside King Charles and Queen Camilla for the past two years.
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His daughters, Princesses Beatrice and Eugenie, and former wife, Sarah Ferguson, also joined the monarch on his walk to church last year.
A royal author claimed that the King recognises that his younger brother's association with Epstein makes him a "loose cannon".
Stephen Bates said: "Charles has a clear sense of the damage Andrew has done to the institution of monarchy."
Prince Andrew and his former wife Sarah Ferguson still reside at Royal Lodge on the Windsor estate, fuelling a feud between the duke and his older brother.
King Charles and the Duke of York arriving to attend the Christmas Day morning church service at St Mary Magdalene Church in Sandringham, Norfolk in 2017
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The former home of Prince Harry and Meghan Markle, Frogmore Cottage was suggested as a suitable replacement for Andrew, who lost his right to taxpayer-funded security after being stripped of his royal duties in 2019.
King Charles is understood to have wanted to cut royal costs, especially since Andrew and Fergie no longer work for the institution.
The feud intensified when King Charles told Andrew that his £1million annual allowance, which he used to fund his security and lifestyle, would finally be axed in a move to evict the Duke of York.
The father-of-two resisted King Charles's attempts to evict him from the Windsor property and has since found legitimate alternative funding, as confirmed by Sir Micheal Stevens, the keeper of the privy purse.
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The Royal Family arriving to attend the Christmas Day morning church service at St Mary Magdalene Church in Sandringham, Norfolk last year
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Andrew's cheaper protection deal at his leased home allows him and his former wife to stay at the property despite the King's wishes.
The Times reports that if Andrew is allowed to join this year, it will show that Charles hasn't completely frozen him out.
Andrew stepped back from royal duties in 2019 following backlash from his controversial Newsnight interview.
Prince Andrew has been widely unpopular with the public since the release of a BBC interview where he discussed his friendship with late convicted paedophile Jeffrey Epstein.
