The monarchy has taken a "family decision" to limit the disgraced Duke of York's appearance on Garter Day to a behind-the-scenes lunch and investiture ceremony.
Andrew will not be seen in public during Garter Day, one of the most colourful events in the royal calendar, after the Prince of Wales and Duke of Cambridge reportedly lobbied the Queen about his participation.
The duke's reputation has been severely tarnished by his involvement in a civil sexual assault case, and it is understood a "family decision" was taken to reduce his involvement to a lunch and investiture ceremony for new Order of the Garter recipients, both held behind closed doors.
The Queen had signalled her support for Andrew - rumoured to be her favourite child - by arriving with him for the Duke of Edinburgh's memorial service in March.
Andrew provided a steady arm for the Queen as she walked into Westminster Abbey to remember the life of her husband, a few weeks after he reached a multimillion-pound out-of-court settlement in a civil sexual assault case.
But there has been speculation senior members of the royal family did not approve of his appearance and it appears the Queen has conceded to their views regarding Garter Day staged at Windsor Castle.
A Buckingham Palace spokesman said: "The Duke of York will attend the investiture and lunch today but will not be part of the procession or service."
The Queen will not be taking part in the procession of Garter Knights who walk through the grounds of Windsor Castle to St George's Hall where the annual service commemorating the Order is held.
Given the monarch's mobility issues the decision was expected and in past years she has travelled by car to the place of worship.
But the Queen is expected to attend the lunch and the investiture ceremony.