Flooding and a sewer backup have delayed the start of the new term. Classes at the school, which has educated princes and prime ministers, will move online.
Serving as the spiritual leader of 85 million Anglicans in an increasingly secular world is just one of the challenges for Justin Welby. He also had a king to crown and immigration policy to condemn.
The youngest headmaster in the history of the English boarding school that has educated the British elite for centuries tries to navigate a tightrope between tradition and evolution.