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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 1298 Mastercard API outages since October 2025. The 1298 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major February 26, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 26, 2026 4:36 PM EST · Resolved Feb 26, 2026 4:40 PM EST · 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 February 26, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 26, 2026 4:20 PM EST · Resolved Feb 26, 2026 4:28 PM EST · 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 February 26, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 26, 2026 4:12 PM EST · Resolved Feb 26, 2026 4:16 PM EST · 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 February 26, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 26, 2026 4:00 PM EST · Resolved Feb 26, 2026 4:04 PM EST · Duration 4 minutes

The Mastercard API experienced a major service issue affecting the Sandbox environment and MDES Customer Service for 4 minutes. Both the Sandbox testing environment and MDES Customer Service functionality were impacted during this incident. The service has been restored to normal operation.

Major February 26, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 26, 2026 3:32 PM EST · Resolved Feb 26, 2026 3:56 PM EST · Duration 24 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 24 minutes of downtime.

Major February 26, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 26, 2026 11:00 AM EST · Resolved Feb 26, 2026 11:04 AM EST · Duration 4 minutes

The Mastercard API experienced a major service issue affecting the Sandbox environment and MDES Customer Service for 4 minutes. Both the Sandbox testing environment and MDES Customer Service functionality were impacted during this incident. The service has been restored to normal operation.

Major February 26, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 26, 2026 10:00 AM EST · Resolved Feb 26, 2026 10:04 AM EST · Duration 4 minutes

The Mastercard API experienced a major service issue affecting the Sandbox environment and MDES Customer Service for 4 minutes. Both the Sandbox testing environment and MDES Customer Service functionality were impacted during this incident. The service has been restored to normal operation.

Major February 26, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 26, 2026 8:31 AM EST · Resolved Feb 26, 2026 8:35 AM EST · Duration 4 minutes

The Mastercard API experienced a major service issue affecting the Sandbox environment and Mastercom services. The incident impacted developers' ability to access testing environments and Mastercom functionality. The service was restored after 4 minutes of downtime.

Major February 26, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 26, 2026 6:59 AM EST · Resolved Feb 26, 2026 7:03 AM EST · Duration 4 minutes

The Mastercard API experienced a major service issue affecting the Sandbox environment and MDES Customer Service for 4 minutes. Both the Sandbox testing environment and MDES Customer Service functionality were impacted during this incident. The service has been restored to normal operation.

Major February 25, 2026

February 2026: Sandbox - Service issue detected

Detected Feb 25, 2026 9:39 PM EST · Resolved Feb 26, 2026 12:55 AM EST · Duration about 3 hours

The Mastercard API experienced a major service issue in the Sandbox environment affecting the Carbon Calculator Experience component. The incident lasted 3.3 hours before being resolved. Both the Sandbox environment and Carbon Calculator Experience functionality were impacted during this outage.