The functioning of the Galileo system has been partially restored, several days after it was reported that the system went inoperational, the GNSS Service Centre's website says.
On 11 July, the website issued a statement, saying that "users may experience service degradation on all Galileo satellites".
Last year, the UK was shut out of the Galileo programme due to Brexit prompting the country to explore the possibility of developing its own satellite navigation system.
British companies built a number of components for the system, with one of the project's two security monitoring centres once based in Swanwick, UK before being relocated to Spain. The UK has expressed concerns over losing access to the system, which is used by government agencies and the British Armed Forces.
Galileo is one of just a handful of global navigation systems in the world, working alongside the US's GPS, Russia's GLONASS, and China's BeiDou.