Microsoft Outlook Not Working Today? Check Status & Fixes

Microsoft Outlook may be down today, but I can’t verify live service status from here; check Microsoft’s service-health page and test Outlook on the web before assuming there is a wider outage. If Outlook fails on several devices or networks at once, a service or account issue is more likely; if only one app or device is affected, local troubleshooting is a better first step.

How to check whether Outlook is down

Start with Microsoft’s public service-health status page and look for an incident affecting Outlook, Outlook.com, Exchange Online, or Microsoft 365. A reported incident may describe a particular problem—such as delayed mail, sign-in failures, or trouble opening calendars—rather than a complete outage. Read the incident details and any updates, since the service may be partly available while Microsoft works on a fix.

If you use a work or school account, your organization’s Microsoft 365 administrator can check Health > Service health in the Microsoft 365 admin center. That view can include tenant-specific notices that a public status page does not show. If you are an ordinary user, ask your IT help desk whether the organization has an outage or maintenance notice.

Reports on outage-tracking websites can help show whether other people are reporting trouble, but those reports are not confirmation from Microsoft. A sudden increase in reports is a clue, not proof. Also check whether the issue affects one service only: mail might load while calendar or search is delayed, for example.

Which Outlook are you using?

“Outlook” can mean several different products. Outlook.com is Microsoft’s personal email service, while Outlook for Windows and Outlook for Mac are apps that can connect to Outlook.com, Microsoft 365 work or school mailboxes, and some other accounts. A problem in one does not automatically mean all the others are down.

Try signing in to Outlook on the web using the same account. For a work or school mailbox, use the web address supplied by your organization or Microsoft 365. For a personal Microsoft account, go to Outlook.com. If webmail works but the desktop app does not, focus on the app, its profile, or its connection. If webmail and multiple devices fail with the same account, check service status, account access, and any organization notices.

Outlook can also look broken when only one feature is affected. Messages may arrive while search is incomplete, a calendar may not update immediately, or an attachment may fail to upload even though ordinary email works. Note the exact symptom before trying fixes; it helps distinguish a service incident from a device problem.

Quick checks before changing settings

First, make sure the device is online by opening another trusted website. Check whether Outlook shows “Working Offline,” “Disconnected,” or a similar connection warning. Confirm that the account shown in the app is the one you intended to use, and try webmail in a private or incognito browser window to rule out a stale browser session.

Close and reopen Outlook, then restart the device if the app remains stuck.
Check the device’s date and time settings; incorrect time can interfere with secure sign-in.
Look for an account sign-in prompt or a request to approve multifactor authentication.
Check available device storage if Outlook cannot download or save messages and attachments.
Ask whether other people on the same work or school account have the same problem.

Do not repeatedly click Send if a message appears stuck in the Outbox. It may already have reached the recipient even if Outlook has not updated its status. Check Sent Items or webmail first, especially before sending an important message again.

Fixes for Outlook on Windows

For classic Outlook for Microsoft 365 on Windows, verify that the app is online: open the Send/Receive tab and check whether Work Offline is selected. If it is, select it to reconnect. Then use Send/Receive > Send/Receive All Folders and allow time for synchronization. The exact tabs can differ in the new Outlook for Windows, which has a different interface and does not use every classic Outlook setting.

If classic Outlook closes, freezes, or behaves differently after an add-in loads, test it in safe mode. Press Windows key + R, enter outlook.exe /safe, and press Enter. If Outlook works in safe mode, an add-in may be involved. In classic Outlook, go to File > Options > Add-ins; next to Manage: COM Add-ins, select Go, then temporarily clear an add-in’s checkbox and restart Outlook. Change one add-in at a time. This safe-mode and COM add-in procedure applies to classic Outlook, not the new Outlook app.

For recurring crashes or problems that persist after an update, close Office apps and repair Microsoft 365. In Windows, open Settings > Apps > Installed apps, find Microsoft 365, select its three-dot menu, choose Modify, and try Quick Repair. If that does not help, an Online Repair is a more thorough option and may take longer. Labels can vary slightly by Windows version. Avoid removing account data or deleting Outlook data files unless you understand what they contain or have guidance from your administrator.

Fixes for Outlook on Mac and mobile

On a Mac, first test the account in a browser and confirm the Mac is connected to the internet. Quit and reopen Outlook, then check Outlook > Settings > Accounts for an account that needs attention. Menu names may change between Outlook versions. If Outlook on the web works but the Mac app does not, update Outlook and macOS through their normal update mechanisms before considering removing and adding the account again. Removing an account can affect locally stored or unsynchronized data, so confirm important mail is available online first.

On iPhone or Android, open Outlook and check for a sign-in prompt, an app update, or a device connection issue. Force-quit and reopen the app, then restart the phone if needed. If messages appear in webmail but not the app, allow a moment for synchronization and check that the account has not been paused or signed out. Reinstalling the mobile app is a later step, not the first one: verify that messages and any important drafts are safely available through the account before removing it.

When mail is missing, delayed, or stuck

Look in more than the Inbox. Check Junk Email, Deleted Items, Archive, and—where available—the Other tab beside Focused Inbox. Search for the sender or a distinctive subject rather than relying only on the visible message list. A rule, filter, or forwarding setting can move mail automatically. In Outlook on the web, review the settings for mail rules and forwarding if messages repeatedly disappear from the Inbox.

For outgoing mail, check the Outbox, attachment size, recipient address, and any bounce-back message. A large attachment, a full mailbox, a sending limit, or an organization’s mail policy can prevent delivery without indicating a general Outlook outage. If a message is delayed, check Sent Items and contact the recipient through another channel before sending duplicates. For a work mailbox, an administrator may be able to investigate delivery using organization tools unavailable to an individual user.

What to do during a confirmed outage

If Microsoft reports an incident matching your symptoms, there may be little to fix locally. Keep the app and device connected, follow the status updates, and avoid repeatedly removing and re-adding accounts or creating new profiles. Those changes are unlikely to resolve a server-side issue and can make troubleshooting more complicated.

For urgent communication, use Outlook on the web if it remains available, or use another approved method. Do not forward confidential work messages to a personal account simply to get around a disruption; follow your organization’s security policy. If the outage is affecting a business-critical mailbox, report the time, account type, error text, and affected features to IT. That information is more useful than a general report that “Outlook is down.”

Security and account-safety checks

Outages and sign-in errors can be exploited by phishing messages that claim to offer a special recovery link. Navigate to Microsoft’s website yourself or use your organization’s established support channel rather than clicking an unexpected link. Never share your password or multifactor authentication code with someone claiming to restore service.

If Outlook reports an unfamiliar sign-in or you suspect the account has been compromised, use Microsoft’s official account-recovery and security steps. For a work or school account, contact the administrator promptly; the organization may need to revoke sessions or reset access. Do not assume that a password reset will fix a service outage, and do not reset a work password through an unofficial site.

Frequently Asked Questions

Is Outlook down right now?
I can’t confirm live status in this article. Check Microsoft’s public service-health page, and, for a work or school account, ask an administrator to check the Microsoft 365 admin center. Test the same mailbox on the web to see whether the issue is limited to an app or device.

Why is Outlook not receiving emails but still opening?
Outlook may be disconnected or still synchronizing, or a filter, rule, Junk Email folder, or mailbox limit may be involved. Check webmail and the other mail folders, then inspect the app’s connection status. If multiple people on the same service are affected, check for an incident.

Why does Outlook work online but not on my computer?
If webmail works with the same account, the service and account are at least partly accessible. Restart the app, check for offline mode or a sign-in prompt, and—if you use classic Outlook for Windows—test safe mode to identify a possible add-in issue.

Will reinstalling Outlook fix an outage?
No. Reinstalling an app cannot fix a confirmed server-side outage. It can also create extra setup work or put unsynchronized local data at risk, so try status checks and simpler connection fixes first.

How long does an Outlook outage last?
There is no reliable fixed duration. Microsoft’s incident updates may describe investigation, mitigation, or recovery, but timing depends on the cause and the affected service. Check for updates rather than relying on an estimated duration from an unofficial report.

Should I send a message again if Outlook says it is stuck?
Check Sent Items or open the mailbox in a browser first. The message may have been delivered even if the app has not refreshed. If it is still in the Outbox and absent from Sent Items, check the connection and recipient details before trying again.

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