The advice effectively means any travellers who printed PDF copies of their NHS Covid Pass before 1 November will have to print a new copy to ensure it is accepted.
The FCDO said the move was necessary to ensure people’s passes are scanned correctly.
It affects people travelling to 11 destinations in total – Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Latvia, the Netherlands and Switzerland.
New FCDO advice was issued on Tuesday (2 November), which confirmed all 11 countries would accept the UK’s proof of Covid-19 vaccination record.
However, it added: "If you are travelling with a printed PDF proof of vaccination status, it must date from 1 November to ensure the certificate can be scanned successfully."
The FCDO also reiterated its advice that NHS appointment cards from vaccination centres would not serve as sufficient proof of vaccination or vaccine status.
It comes just days after the EU confirmed the NHS Covid Pass would have equivalence with its own Digital Covid Certificate scheme, meaning the NHS Covid Pass will be accepted as proof of vaccination across the EU anywhere where the EU Digital Covid Certificate is.
The advisory was extended to Germany, Italy, Greece, Lithuania and Malta on Wednesday morning (3 November).
