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Outlook | Web | Outlook on the web for business | Email
Sending, receiving, and organizing email in Outlook on the web for business
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Dear @Rebekkah Merino,
I hope you’re having a good day
The issue preventing Outlook on the web from loading or responding is directly caused by an ongoing, widespread Microsoft 365 service incident affecting Exchange Online and several connected services (Incident ID: MO1550821).
Latest Status & Resolution Progress (Updated Nov 13, 2026, at 16:57 GMT+7 / 09:57 UTC):
When will it be fixed? Recovery actions are actively progressing in phases across Microsoft's infrastructure, and some accounts and regions are already regaining normal access. While Microsoft has not yet confirmed an exact final resolution time (ETA) for full baseline stability across all servers, incremental improvements are steadily rolling out.
What you can do right now: Try refreshing Outlook on the web (or opening an Incognito/InPrivate browser window) periodically, as your mailbox may reconnect as capacity is restored to your region's servers.
Email Protection: To ensure your work emails are not lost or bounced during the outage, Microsoft has prioritized queue processing and extended the email timeout window to 48 hours. Any emails sent to you while Outlook was down are safely preserved and will be delivered automatically once your account reconnects.
If you have Microsoft 365 administrator privileges, please sign in to the Microsoft 365 Admin Center to view the latest technical updates:
- Go to Health > Service Health.
- Search for Issue ID: MO1550821.
- Select the issue and expand the details to review the latest updates, affected services, impact, and remediation information.
If you are a regular user, please reach out to your organization's IT administrator so they can monitor the progress for you. If you don't know who the admin is in your organization, you can find guidance here: How can I find my Microsoft 365 admin? - Microsoft Support
Warm regards,
If the answer is helpful, please select "Yes, accept answer". If you have any questions or new updates, please feel free to comment below.