mail.office365.com Server Down | Check Microsoft Office 365 Status

If you are currently experiencing trouble with Office 365 or mail.office365.com, it may be due to ongoing recovery or isolated disruptions following these incidents.

There have been recent outages affecting Microsoft Office 365 services, including mail.office365.com, in October 2025.

A significant outage was reported worldwide on October 8, 2025, impacting key platforms such as Exchange Online, Microsoft Teams, and the admin portal. Microsoft initiated a high-priority investigation and gradually restored most services, but technical teams are still monitoring the infrastructure to ensure stability and prevent further issues.​

 To get the most accurate and up-to-date status of Microsoft 365 services, including mail, visit the official Microsoft 365 admin center service health dashboard. This dashboard provides real-time status updates and incident details for all Microsoft cloud services. If you don’t have admin access, you can check recent updates via @MSFT365Status on X (Twitter) or third-party outage trackers like Downdetector.

Here are the official ways to check the most reliable status for Microsoft 365 services:

1. For Microsoft 365 Administrators (Most Detail)

If you are the administrator for your organization’s Microsoft 365 account, this is the best place to check:

• URL: https://admin.microsoft.com

• Steps:

  1. Sign in to the Microsoft 365 admin center.
  2. In the left navigation menu, go to Health > Service health.
  • This dashboard provides a personalized view of all services (Exchange Online—which handles the mail—SharePoint, Teams, etc.) that are subscribed to by your tenant. It will show if any issue is impacting your specific region or organization.

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2. For General Public/Users (Unauthenticated Status)

If you are not an administrator or cannot log in, you can check the general status pages.

• Microsoft 365 Health Status (Public):

  • URL: https://status.cloud.microsoft/
  • This page reports on widespread, major incidents affecting Microsoft 365 services globally. If the issue is minor or local, it may not be listed here.

3. For Outlook.com/Personal Microsoft Accounts (Different Service)

If you are using a consumer-level Outlook email (e.g., @outlook.com or @hotmail.com), this is the status page for you:

• Outlook.com Status Page: You can search online for the current status of Outlook.com.

Troubleshooting Steps to Try First

If the official status shows everything is healthy, the issue may be local to your machine:

1. Clear Browser Cache:

   • Clear your browser’s cache and cookies, then try accessing mail.office365.com again.

2. Try a Different Browser:

   • Attempt to log in using a completely different web browser (Chrome, Edge, Firefox, etc.).

3. Try the Desktop App:

   • If you are using the web version, try opening the Outlook desktop application to see if mail is flowing there.

4. Check Ad Blockers:

   • Some ad-blockers or browser extensions can interfere with the way Outlook on the web loads. Try disabling them temporarily.