Proofpoint Outage History

Proofpoint's Efficacy service experienced an outage affecting connections to Microsoft 365 and Microsoft Azure. The incident began at 4:00 PM UTC and Microsoft reported a service interruption impacting Microsoft 365 Business, Microsoft 365 Enterprise, and Microsoft Azure. As a result, spam updates were delayed and emails with malicious attachments could be delayed or not processed promptly. The provider indicated the issue in its status updates, moving from up to warn at Oct 29, 2025 9:04 PM UTC with a next update scheduled for 10:00 PM UTC.

Proofpoint Efficacy experienced a disruption in connectivity to Microsoft 365 and Microsoft Azure, which impacted spam update delivery and security processing for emails (including those with malicious attachments). Customers relying on Proofpoint's Efficacy product may have observed delayed threat updates and reduced protection during the incident.

Proofpoint experienced a connectivity issue preventing Tessian, CASB, and Zenguide Outlook Plugins from communicating with Microsoft 365 and Microsoft Azure. This impacted customer integrations relying on Proofpoint to reach Microsoft services. The outage began at 4:00 PM UTC and was resolved by 7:28 PM UTC, lasting about 3 hours and 28 minutes. Microsoft reported a service interruption affecting Microsoft 365 and Azure, which underpinned the outage. A small number of user reports were received, including a report from Mumbai at 6:47 PM UTC. Proofpoint posted two status updates during the incident, at 6:04 PM UTC and 7:28 PM UTC.

Proofpoint experienced a brief DNSSEC-related disruption that affected access to the admin site and email delivery. The outage began at Jul 14, 2025 2:38 PM UTC and was resolved by Jul 14, 2025 2:50 PM UTC, lasting about 12 minutes. StatusGator detected the issue at Jul 14, 2025 2:38 PM UTC, ahead of Proofpoint's acknowledgement. Users reported admin console outages and email delays during the event.

Proofpoint did not publish status updates on their current incidents page during the event, leaving communication sparse. The incident appeared to involve administrative tooling and mail flow and was observed across multiple locations, indicating a short, cross-regional disruption rather than a sole regional outage.

A Proofpoint incident disrupted inbound and outbound email for customers across the United States and Canada. Users reported delays and, in some cases, non-delivery of emails, with messages taking up to an hour or more to traverse the system. The issue began around Jun 11, 2025 4:37 PM UTC and was resolved by Jun 11, 2025 8:19 PM UTC, lasting approximately 3 hours and 42 minutes. StatusGator issued an Early Warning Signal, but Proofpoint did not publish any status updates during the event. Activity surged in the 17:30–18:00 UTC window as reporters across multiple regions described mail flow problems.