Microsoft 365 Email & Outlook Web Access Issues — Service Status Update Jan. 23rd 2026

Adam Corder
Jan 23
1 min read

Yesterday, Microsoft experienced a widespread outage affecting Microsoft 365 business services. Many organizations (including some of our clients) reported issues with email access and delivery, particularly related to Exchange Online and Outlook.

Current status (today)

As of this morning, Microsoft is still reporting an active service incident impacting Exchange Online, where:

Some users may be unable to access or load Outlook on the web (OWA)
The issue is currently listed as Service Degradation
Microsoft has indicated the impact may affect users in the United States, France, and the United Kingdom

What this means for users

Depending on your Microsoft 365 tenant and region, you may experience:

Outlook on the web failing to load
Intermittent login or mailbox access issues
Delays in sending or receiving email

What we recommend

If you are affected:

Try using the Outlook desktop app or the mobile app as a workaround
If you must use a browser, try an incognito/private window or a different browser
If issues persist, contact our team and include:
- impacted user(s)
- approximate time of failure
- screenshots or error messages

We are monitoring this

Our team is actively monitoring Microsoft’s service health updates and will continue to provide updates as Microsoft confirms full resolution.

If you need assistance validating whether your tenant is impacted or want us to help monitor and respond, please contact us at support@nsao.com or through our website.

— NSAO IT Consulting Team