Santander is experiencing an outage that prevents some customers from accessing their personal banking. Multiple reports say thousands of users cannot log in to their accounts, including through the Santander mobile app and via online banking on computers.

Outlets describe the issue as widespread among retail customers, with users reporting login failures rather than specific transaction problems. The reports point to difficulty accessing both app and web services, suggesting an interruption affecting authentication or sign-in for online banking.

While the specific technical cause is not detailed in the coverage, the shared focus across sources is that customers are unable to complete sign-in attempts. The accounts affected include customers trying to access their banking through either the app or a browser, indicating the disruption spans more than one access channel.