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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 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 12:13 PM EDT · Resolved Apr 24, 2026 12:21 PM EDT · Duration 8 minutes

The Mastercard API sandbox environment experienced a major service issue affecting MDES Customer Service and Transaction API for Acquirers. The incident impacted the sandbox testing environment, preventing developers from accessing these critical API services. The service was restored after 8 minutes of downtime.

Major April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 12:05 PM EDT · Resolved Apr 24, 2026 12:09 PM EDT · Duration 4 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 functionality used by acquirers. The service was restored after 4 minutes.

Major April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 11:45 AM EDT · Resolved Apr 24, 2026 11:53 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 April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 11:37 AM EDT · Resolved Apr 24, 2026 11:41 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 April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 11:29 AM EDT · Resolved Apr 24, 2026 11:33 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 April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 11:13 AM EDT · Resolved Apr 24, 2026 11:25 AM EDT · Duration 12 minutes

The Mastercard API Sandbox experienced a major service issue affecting the Transaction API for Acquirers. The incident lasted 12 minutes before being resolved. The sandbox environment was impacted, potentially disrupting testing and development activities for acquirer integrations.

Major April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 11:01 AM EDT · Resolved Apr 24, 2026 11:09 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 functionality used by acquirers. The service was restored after 8 minutes.

Major April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 10:53 AM EDT · Resolved Apr 24, 2026 10:57 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 April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 10:29 AM EDT · Resolved Apr 24, 2026 10:33 AM EDT · Duration 4 minutes

The Mastercard API experienced a major service issue affecting the Sandbox environment and Easy Savings Specials Merchant Offers functionality. The incident impacted developers' ability to test and access merchant offer services through the sandbox. The service was restored after 4 minutes.

Major April 24, 2026

April 2026: Sandbox - Service issue detected

Detected Apr 24, 2026 10:29 AM EDT · Resolved Apr 24, 2026 10:45 AM EDT · Duration 16 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 16 minutes of downtime.