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Mastercard API Outage History

Every past Mastercard API outage tracked by IsDown, with detection times, duration, and resolution details.

There were 1761 Mastercard API outages since October 2025. The 1761 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 12:37 PM EDT · Resolved May 11, 2026 12:41 PM EDT · Duration 4 minutes

The Mastercard API Sandbox experienced a major service issue affecting the Transaction API for Acquirers. The incident impacted sandbox environment functionality for acquirer transaction processing. The service was restored after 4 minutes of downtime.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 12:01 PM EDT · Resolved May 11, 2026 12:25 PM EDT · Duration 24 minutes

The Mastercard API experienced a major service issue affecting the Transaction API for Acquirers in the sandbox environment. The incident impacted developers' ability to test transaction processing functionality through the sandbox system. The service was restored after 24 minutes of downtime.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 11:49 AM EDT · Resolved May 11, 2026 11:57 AM EDT · Duration 8 minutes

The Mastercard API Sandbox experienced a major service issue affecting the Transaction API for Acquirers. The incident impacted the sandbox environment used for testing and development purposes. The service was restored after 8 minutes of downtime.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 11:41 AM EDT · Resolved May 11, 2026 11:45 AM EDT · Duration 4 minutes

The Mastercard API Sandbox experienced a major service issue affecting the Transaction API for Acquirers. The incident impacted the sandbox environment used for testing and development purposes. The service was restored after 4 minutes of downtime.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 11:29 AM EDT · Resolved May 11, 2026 11:37 AM EDT · Duration 8 minutes

The Mastercard API experienced a major service issue affecting the Transaction API for Acquirers in the sandbox environment. The incident impacted the sandbox testing environment and the Transaction API for Acquirers component. The service was restored after 8 minutes.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 11:17 AM EDT · Resolved May 11, 2026 11:25 AM EDT · Duration 8 minutes

The Mastercard API experienced a major service issue affecting the Transaction API for Acquirers in the sandbox environment. The incident impacted the sandbox testing environment and the Transaction API for Acquirers component. The service was restored after 8 minutes.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 11:05 AM EDT · Resolved May 11, 2026 11:13 AM EDT · Duration 8 minutes

The Mastercard API experienced a major service issue affecting the Transaction API for Acquirers in the sandbox environment. The incident impacted developers' ability to test transaction processing functionality through the sandbox system. The service was restored after 8 minutes of downtime.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 10:49 AM EDT · Resolved May 11, 2026 10:53 AM EDT · Duration 4 minutes

The Mastercard API Sandbox experienced a major service issue affecting the Transaction API for Acquirers. The incident impacted the sandbox environment used for testing and development purposes. The service was restored after 4 minutes of downtime.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 5:20 AM EDT · Resolved May 11, 2026 10:41 AM EDT · Duration about 5 hours

The Mastercard API sandbox environment experienced a major service issue affecting the Doconomy Aland Index and Transaction API for Acquirers. The outage lasted 5.4 hours, impacting developers and partners using these sandbox services for testing and integration purposes. The issue has been resolved and services are now operational.

Major May 11, 2026

May 2026: Sandbox - Service issue detected

Detected May 11, 2026 4:09 AM EDT · Resolved May 11, 2026 4:33 AM EDT · Duration 24 minutes

The Mastercard API experienced a major service issue affecting the Sandbox environment and Doconomy Aland Index service. The incident impacted API functionality for 24 minutes before being resolved. The service disruption was classified as major, indicating significant impact to users during the outage period.