Microsoft 365 Outage Update: Email Delivery Improving as Services Recover
Friday, November 13, 2026 | Morning Update 7:30 AM EST
Current Status: Recovery Progressing — Some Services May Still Be Affected
Network Solutions and Optimization (NSAO) has encouraging news regarding the widespread Microsoft 365 and Outlook email outage that began Thursday, November 12.
We are now beginning to see previously delayed emails arriving in Outlook, and our latest email delivery tests show that newly sent messages are being received within approximately one minute.
This is a significant improvement compared to the disruptions experienced yesterday and overnight.
While these results are encouraging, Microsoft has not yet confirmed that all affected services have been fully restored.
What Microsoft Is Reporting
According to Microsoft's latest published service health information, its engineers have implemented a corrective patch affecting an authentication and routing component in the impacted infrastructure.
Microsoft reports improved server stability and is expanding the changes to additional infrastructure as recovery progresses.
Microsoft continues monitoring its systems and working toward full restoration.
Microsoft incident references:
EX1550543 — Exchange Online connectivity issues
MO1550821 — Multiple Microsoft 365 services affected
What NSAO Is Seeing This Morning
Our team has been actively testing email delivery and monitoring Outlook connectivity.
We are observing several positive developments:
Previously delayed email messages are beginning to appear in Outlook.
Newly sent test emails are currently being delivered within approximately one minute.
Email connectivity and message delivery appear to be improving significantly in our environment.
These observations suggest Microsoft's restoration efforts are making meaningful progress.
However, recovery may vary between businesses, individual mailboxes, and Microsoft 365 services.
Some previously delayed messages may continue arriving as Microsoft's infrastructure stabilizes.
What Should Customers Do?
If your Outlook email has started working again, we recommend:
Allow Outlook time to synchronize and download any delayed messages.
Check for emails that may have arrived late, particularly important business communications from yesterday.
Verify that you can both send and receive new messages.
Avoid making unnecessary changes to Outlook profiles, passwords, or email configuration.
Continue using alternate communication methods for urgent matters until Microsoft confirms full restoration.
If you are still experiencing email problems, please know that recovery may not occur simultaneously for all users.
How to Contact NSAO
Our preferred method of contact during this disruption is text messaging.
Please text NSAO at (330) 966-8097 for technical assistance.
Text messaging gives our team a more immediate way to receive your request, communicate directly with you, and coordinate support while email services are recovering.
You may also call (330) 966-8097. If necessary, please leave a voicemail with your company name, issue, and callback number.
Official Microsoft Service Status
Microsoft 365 administrators can review the incidents through the Microsoft 365 Service Health Dashboard:
Microsoft's public status page:
Microsoft 365 Status updates:
NSAO Will Continue Monitoring
We are encouraged by the improvements observed this morning and will continue testing email delivery as Microsoft works toward complete restoration.
We appreciate your patience and understanding throughout this disruption.
Network Solutions and Optimization, LLC (NSAO)
Managed IT, Security & Cloud
Last updated: November 13, 2026 — Morning Update 7:30 AM EST
NSAO's delivery observations reflect tests performed in our environment and may not represent the experience of every Microsoft 365 customer.
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