Microsoft Entra ID Outage: How Vantage DX Detected the Issue Before Microsoft Acknowledges the Issue
On February 25, 2025, at 11:32 AM EST, Martello’s Vantage DX monitoring began alerting on an issue affecting Microsoft Entra ID (Azure AD SSO). While Microsoft had not yet acknowledged the incident, online reddit forums had noted the issue and our Vantage DX proactive monitoring detected disruptions impacting authentication across multiple workloads. See here the critical warning for Exchange in Vantage DX Monitoring. Here is the critical warning for OneDrive and SharePoint in Vantage DX.