Microsoft rolls back Exchange Admin Center change after server errors

Feeds.4Sysops •IT News • October 12, 2026

Microsoft is rolling back a recent Exchange Admin Center change as it investigates “Internal Server Error” reports that are blocking some administrators from opening the portal. The rollback is underway, but Microsoft has not confirmed that access is restored or set a resolution time. Source

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Exchange Admin Center Outage Due to Configuration Change On October 12, 2026, Microsoft confirmed that a configuration change led to an outage of the Exchange Admin Center, preventing administrators from accessing the portal. The company initiated a rollback of the change, which successfully restored access. Reports indicated that administrators were encountering 'Internal Server Error' messages during this disruption. While Microsoft has confirmed the restoration of service, the exact duration of the outage and the number of affected users remain unspecified. The incident highlights the potential impact of configuration changes in critical systems. 2 sources 22

Extracted Entities

Companies (1)

Microsoft