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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 1759 Mastercard API outages since October 2025. The 1759 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major April 28, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 28, 2026 12:04 PM EDT · Resolved Apr 28, 2026 12:09 PM EDT · Duration 4 minutes

The Mastercard API experienced a major service issue affecting the MDES Customer Service in the Sandbox environment. The incident impacted both the Sandbox testing environment and MDES Customer Service functionality. The service was restored after 4 minutes.

Major April 28, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 28, 2026 9:31 AM EDT · Resolved Apr 28, 2026 9:34 AM EDT · Duration 4 minutes

The Mastercard API experienced a major service issue affecting the Mastercom service in the Sandbox environment. The incident impacted both the Sandbox testing environment and Mastercom functionality. The service was restored after 4 minutes of downtime.

Major April 28, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 28, 2026 9:03 AM EDT · Resolved Apr 28, 2026 9:11 AM EDT · Duration 8 minutes

The Mastercard API experienced a major service issue affecting the Sandbox environment and MDES Customer Service for 8 minutes. Both the testing sandbox and the MDES Customer Service component were impacted during this incident. The service has been restored to normal operation.

Major April 28, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 28, 2026 7:07 AM EDT · Resolved Apr 28, 2026 7:43 AM EDT · Duration 36 minutes

The Mastercard API Sandbox experienced a major service issue that affected the Carbon Calculator Experience component. The incident lasted 36 minutes before being resolved. Both the Sandbox environment and Carbon Calculator Experience functionality were impacted during this outage.

Major April 28, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 28, 2026 4:34 AM EDT · Resolved Apr 28, 2026 5:59 AM EDT · Duration about 1 hour

The Mastercard API Sandbox environment experienced a major service issue affecting the Carbon Calculator and Carbon Calculator Experience components. The incident lasted approximately 1.4 hours before being resolved. No specific details about the root cause or resolution steps were provided in the incident report.

Major April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 1:13 PM EDT · Resolved Apr 27, 2026 7:49 PM EDT · Duration 3 days

The Mastercard API's Personalized Offers service experienced a major outage in the sandbox environment lasting 78.6 hours. The incident affected developers' ability to test and integrate with the Personalized Offers API functionality. The service has since been restored to normal operation.

Major April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 1:01 PM EDT · Resolved Apr 24, 2026 1:09 PM 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 April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 12:41 PM EDT · Resolved Apr 24, 2026 12:49 PM 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 April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 12:33 PM EDT · Resolved Apr 24, 2026 12:37 PM 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 April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 12:25 PM EDT · Resolved Apr 24, 2026 12:29 PM 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.