Hello klive0124
If the problem was with the merchant, all Visa cards worldwide would be affected, not just individual cards from specific countries or from specific issuers (banks).
Therefore, I suspect that your Visa card does not support the technical standard EMV® 3D Secure (known as 3DS 2.x). This is a market standard in Switzerland and is widely implemented by most PSPs (Payment Service Providers) for security and interoperability reasons. SBB’s PSP requires this technical standard. However, since it is not legally required, it is quite possible that other PSPs have not implemented this technical standard and therefore payment was possible. In the EU, however, it is even legally required.
3DS2 Implementing / Support Overview (2025)

Although Visa and Mastercard officially discontinued support for 3D Secure 1.0 in 2022, this does not automatically mean that all issuers (banks) worldwide have fully switched to 3DS 2.x or are handling it correctly and such transactions are often automatically declined (silent errors):
- Some foreign issuers (banks) run older Access Control Servers (ACS), which support 3DS2 nominal, but are still technically based on old 3DS1 backends or frameworks and behave like 3DS1 gateways.
- Visa / Mastercard Directory Server is actually trying to mediate between 3DS2 and old foreign ACS systems. However, this mediation (3DS bridging) does not work reliably with incompatible or incorrectly configured ACS setups of the foreign issuers (banks). In case of compatibility problems there can be silent errors.
What can cardholders do when the 3D Secure process fails and the payment is declined?
Option 1: Use a different card
- AMEX: American Express operates its own 3DS system (SafeKey), which is not tied to the Visa / Mastercard Directory Servers, but runs entirely within Amex. Since Amex is an Issuer, ACS and SafeKey platform, there are hardly any bridging problems. SafeKey works the same worldwide, unlike Visa / Mastercard, where Issuer (banks) implement these solutions differently.
- Alternatively, try a Mastercard: Mastercard may offer more reliable 3DS bridging solutions between PSP and issuer than Visa.
Option 2: Contact your issuer (bank) – preferably in writing:
- Ask whether the current card may still be connected via an outdated or only partially compatible ACS system.
- Ask for a card with proven EMV 3DS 2.x support, including an active Access Control Server (ACS) that can correctly receive and respond to 3DS2 requests from european Payment Service Providers (e.g. via Visa or Mastercard Directory Server).
Kind regards,
Nicole