Microsoft confirmed an ongoing Exchange Online incident, tracked as EX1467029, causing intermittent 'Server busy' errors for users sending or receiving messages from external domains. The company says anti-spam protections may be worsening delays for some accounts, and it has not yet identified the root cause or affected regions.
bleepingcomputer.com
· 2026-09-04
OpenAI reported elevated errors and latency on ChatGPT Work, its enterprise AI agent, for about three hours on Monday, while Microsoft separately confirmed degraded functionality across Exchange Online. Downdetector logged over 1,100 reports for OpenAI products and nearly 4,600 for Microsoft Outlook around 2:24 p.m. ET, though the companies gave no indication the two incidents were related.
cnbc.com
· 2026-08-31
Microsoft confirmed a widespread outage of Exchange Online on Monday, causing Outlook users to experience delayed or failed emails, authentication errors, and search failures. The company traced the problem to an authentication component and began testing a fix on part of its infrastructure before a broader rollout. Downdetector logged over 5,000 user reports by 2 PM ET, with complaints also flooding social media.
techcrunch.com
· 2026-08-31
Microsoft confirmed it is investigating a major Exchange Online disruption, tracked internally as EX1464935, after a flood of user reports began around 5:30 PM UTC. Tens of thousands of users reported problems sending and receiving emails, logging into accounts, and managing mailboxes through Outlook and admin tools, according to Downdetector data.
bleepingcomputer.com
· 2026-08-31