Microsoft investigates Office Apps, Teams file access issues By Sergiu Gatlan June 1, 2026 10:36 AM Microsoft says an ongoing incident is preventing users of its Teams collaboration platform and free Office for the web cloud-based productivity suite from opening files. …
… "As elevated error rates persist, we're actively evaluating additional mitigation options, including optimizing how service requests are processed to further stabilize the service." While the company has yet to share what regions are affected, it confirmed the issue around 5 AM ET and classified it… …
… If that evaluation changes based on new evidence from the ongoing investigation, Grafana Labs promised to notify impacted customers directly. …
… However, the company has also tagged this ongoing incident as an advisory, a flag commonly used to describe service issues typically involving limited scope or impact. …
… Microsoft said these ongoing issues are affecting Exchange Online users trying to send or access their emails, resulting in extensive delays or failures, and that its engineers are currently reviewing reports to discover the root cause. …
… The regulatory floor was written for institutions where significant changes happened on quarterly release cycles. …