Trident Submarines Ran 'Windows XP for Submarines' Into the Mid-2010s
A source revealed that the UK's Trident nuclear submarines relied on a specialized operating system colloquially known as 'Windows XP for Submarines'—a version of Microsoft’s aging 2001 software, long after it was considered obsolete.
In the 2010s, a source informed a UK resident that the country’s Trident nuclear submarines were operating on a system referred to as 'Windows XP for Submarines'. This was a specialized version based on Microsoft Windows XP, which was originally released in 2001 and officially replaced by Windows Vista in 2007.
By the mid-2010s, reliance on such an outdated operating system was considered unusual for large, complex organizations. The revelation highlighted a significant gap between the advanced capabilities of the fleet and the aging software running critical systems.