Rackspace Cloud Office incident
Exchange Online Connectivity Issues — Investigating
Resolved after 15 minutes, affecting Rackspace Email & Apps, on November 12, 2026.
Users may currently be unable to connect to their Exchange Online mailboxes across multiple connection methods. Our upstream partner, Microsoft, has confirmed this is an active infrastructure issue and is actively investigating. Impacted Connection Methods Users attempting to access their mailboxes through the following protocols may experience connectivity errors: • Outlook on the web (OWA) • Messaging API (MAPI) • Exchange ActiveSync (EAS) • Representational State Transfer (REST) API Current Status & Investigation Microsoft engineering teams have identified connectivity errors occurring on a portion of the Exchange Online infrastructure responsible for receiving and processing user access requests. They have collected networking logs and are currently analyzing them to pinpoint the root cause and determine the next steps for remediation. Next Steps We are closely monitoring Microsoft's progress and will provide an update here as soon as new information or an estimated time to resolution becomes available. For direct updates from Microsoft, please refer to the Microsoft 365 Service Status Page: https://status.cloud.microsoft/m365/referrer=serviceStatus
Affected components
Update timeline
- monitoring Nov 12, 2026, 06:36 PM UTC
• User Impact: Users may be unable to access their Exchange Online mailboxes via Outlook on the web, MAPI, Exchange ActiveSync (EAS), or REST API. • Scope: This may affect any user attempting to connect to Exchange Online using the methods listed above. • Current Status: We have isolated connectivity errors within a segment of our Exchange Online infrastructure that processes access requests. Our team is currently reviewing collected networking logs to identify the source of the errors and establish a path to resolution. Next update to follow shortly.
- monitoring Nov 12, 2026, 06:46 PM UTC
Users may currently be unable to connect to their Exchange Online mailboxes across multiple connection methods. Our upstream partner, Microsoft, has confirmed this is an active infrastructure issue and is actively investigating. Impacted Connection Methods Users attempting to access their mailboxes through the following protocols may experience connectivity errors: • Outlook on the web (OWA) • Messaging API (MAPI) • Exchange ActiveSync (EAS) • Representational State Transfer (REST) API Current Status & Investigation Microsoft engineering teams have identified connectivity errors occurring on a portion of the Exchange Online infrastructure responsible for receiving and processing user access requests. They have collected networking logs and are currently analyzing them to pinpoint the root cause and determine the next steps for remediation. Next Steps We are closely monitoring Microsoft's progress and will provide an update here as soon as new information or an estimated time to resolution becomes available. For direct updates from Microsoft, please refer to the Microsoft 365 Service Status Page: https://status.cloud.microsoft/m365/referrer=serviceStatus
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