Microsoft Exchange Online users have experienced intermittent access issues to their cloud-based mailboxes through Outlook mobile and Mac desktop clients since Thursday. The service disruption has prevented some users from connecting to their email accounts through these specific platforms.

The scope and severity of the outage remains unclear, as Microsoft has not disclosed the number of affected users or provided detailed technical specifications about the root cause. The issue appears to be isolated to mobile and Mac desktop Outlook applications, while web-based access through other channels may remain functional.