Outlook Not Working Today? Status Checks and Fixes

If Outlook is not working today, the cause could be a Microsoft service disruption or a problem with your device, network, account, or app. I can’t verify live service status here, so first check Microsoft’s official service-status information; then use the symptoms and steps below to narrow down what is wrong.

Check whether Outlook is down

Start by checking Microsoft’s service health information rather than repeatedly changing settings on your device. For Microsoft 365 work or school accounts, an administrator can sign in to the Microsoft 365 admin center and open Health > Service health. This view reports known incidents and advisories affecting services in the organization’s tenant. If you are not an administrator, ask your IT team whether there is a reported issue.

For public updates, consult Microsoft’s service-status page at status.cloud.microsoft and Microsoft’s official support channels. Consumer Outlook.com and organizational Microsoft 365 accounts are not necessarily affected by the same incident, so look for a notice that matches the service and account type you use. A public status page may take time to reflect a developing problem, and an incident can affect only some users or regions.

Independent outage-reporting websites can show whether other people are reporting similar symptoms, but they are not proof of a Microsoft outage. Reports may reflect local internet problems, and a sudden rise in reports does not identify the affected service. Treat them as a clue, then compare with Microsoft’s notices and test Outlook on a separate network or device.

Know which Outlook service you use

Outlook is the name of several related products, and identifying yours makes status checks more useful. Outlook.com is Microsoft’s consumer email service, commonly used with personal Microsoft accounts. Outlook for Windows, Outlook for Mac, and the Outlook mobile apps are email clients; they can connect to Outlook.com, Microsoft 365, Exchange, Gmail, and other accounts. A client problem does not necessarily mean the email service itself is unavailable.

Work and school accounts are usually managed by an organization and may use Exchange Online or an organization’s own systems. The organization may also apply sign-in rules, security requirements, or maintenance schedules. If your personal Outlook.com mailbox works but your work mailbox does not, that points toward a different account, policy, or service issue—not necessarily a general Outlook outage.

Check the address or account shown in the app, and try signing in to the corresponding web mailbox. For a work or school account, use the webmail link provided by your organization if available. For a personal account, try Outlook.com in a browser. If the website works but the desktop app does not, focus on the app, its connection, or its saved account configuration.

Match the symptom to the likely cause

“Outlook is not working” can describe several different failures. The exact symptom helps distinguish a service incident from a local issue:

Website will not load or sign-in fails: Check the service status, internet connection, and account sign-in. A browser error alone does not show which one is responsible.
The app opens but will not connect: Check whether the device is online, whether a VPN or network filter is interfering, and whether Outlook is set to work offline.
New mail is missing: Check the web mailbox, focused and other inbox views, junk mail, filters, and whether the app has synchronized recently.
Messages stay in the Outbox: The app may be offline, a large attachment may be delaying sending, or the account may not be able to connect. Check the web mailbox before sending again to avoid duplicates.
Only one account or device fails: This often points to that account’s sign-in, configuration, or device rather than a broad outage.
Outlook is slow or crashes: A large mailbox, an add-in, an outdated app, or limited device resources may be involved. A service incident is only one possibility.

Try safe troubleshooting steps first

Work from quick, low-risk checks toward changes that affect the app configuration. After each step, test the same action that failed so you can tell whether anything changed.

Check the connection. Open another trusted website or app. If nothing connects, resolve the device’s internet or Wi-Fi problem first. If possible, test Outlook on a different network, such as a mobile hotspot, while keeping in mind that managed devices may restrict this.
Test the mailbox in a browser. If webmail works while the desktop app fails, the account is reachable and the issue may be local to the client. If both fail, check service health and account sign-in before rebuilding the app.
Close and reopen Outlook. Save other work first. A restart can clear a temporary app hang, but it will not repair a confirmed service outage.
Check offline mode in classic Outlook for Windows. Open the Send/Receive tab and see whether Work Offline is selected. If it is, select it to reconnect, then allow time for synchronization. This control may not appear in the same way in new Outlook or on other platforms.
Review sign-in prompts. Complete any legitimate Microsoft sign-in or multifactor authentication request. If the prompt appears unexpectedly, navigate to Microsoft’s site or your organization’s approved sign-in page yourself instead of following an untrusted email link.
Update the app and device. Install available updates through the normal Microsoft 365, Microsoft Store, macOS, or mobile-app update process for the version you use. Updates can address known bugs, though they will not resolve a server-side incident.
Check storage and attachments. A mailbox at its storage limit may be unable to receive new messages, and a very large attachment can delay sending. Check the mailbox’s storage information and use a file-sharing link where appropriate instead of repeatedly retrying a large message.

Check the app, browser, and phone separately

On Windows, classic Outlook and new Outlook do not have identical controls. In classic Outlook, account details are available through File > Account Settings > Account Settings, while connection status appears in the status area at the bottom of the window. If an organization permits it, classic Outlook can also be started in safe mode to help identify whether an add-in is involved. Do not remove an account or delete local data simply because the app is temporarily disconnected.

On a Mac, use Outlook’s own settings and the account or synchronization options available in that version; Windows ribbon paths and Windows-only instructions do not apply. In a browser, try a private or incognito window to check whether a browser extension or saved site data is contributing. This is a diagnostic comparison, not a guaranteed fix. Clearing all browser data can sign you out of websites, so avoid doing it before checking simpler causes.

On an iPhone or Android device, confirm that the Outlook app can use the network and that background data or battery restrictions are not preventing updates. Open the mailbox manually to trigger a fresh check. If webmail works but the phone app does not, updating or restarting the app is a reasonable first move. Before removing an account, make sure you know the correct password and can complete any organization-required verification.

Protect messages and account access

A temporary connection failure usually does not mean that stored email has disappeared. Messages may simply not have synchronized to the device yet. If a message is missing, check the mailbox through the web interface, search all folders, and review deleted and junk folders before assuming it was lost. If a message is in the Outbox, check whether it was sent from webmail before trying again; otherwise, the recipient could receive duplicates when the connection returns.

Be cautious with advice to delete Outlook data files, reset a profile, remove credentials, or repeatedly enter a password. Such changes can disrupt cached mail or trigger additional authentication steps, and they will not fix a Microsoft service outage. Follow organization guidance for a work account. If you see an unexpected password-reset notice, unfamiliar sign-in alert, or suspicious prompt, go directly to the official account-security page and contact your organization’s IT team if the account is managed.

When to contact IT or Microsoft support

Contact your organization’s help desk if a work or school account is affected, especially when webmail and the app both fail, other colleagues have the same problem, or a sign-in policy message appears. Include the time the problem began, your device and Outlook version, the exact error text, and whether webmail or another network works. Do not send your password or multifactor authentication code.

For a personal account, use Microsoft’s official support and account-recovery options if the status page shows no relevant incident and basic checks do not restore access. Report whether the issue affects Outlook.com, the desktop app, or the mobile app. If Microsoft has acknowledged an incident, avoid repeatedly changing account settings; monitor official updates and retry after the service is reported as recovered.

Frequently Asked Questions

Is Outlook down right now?
There is no reliable way to confirm a live outage from this page. Check Microsoft’s current service-status information and, for an organization account, ask an administrator to review Health > Service health in the Microsoft 365 admin center.

Why does Outlook work online but not in the app?
If webmail works, the account can be reached, so investigate the app’s connection, offline setting, sign-in state, updates, or local configuration. Avoid deleting the account or local data until you have checked simpler causes.

Why is Outlook not receiving new emails?
Check the web mailbox, junk and other folders, filters, storage limit, and the app’s last synchronization. If webmail also has no new messages and other people are affected, check for a service incident or ask the mail administrator.

Will my email come back after an Outlook outage?
Messages already stored in the mailbox generally remain there during a temporary client or connection problem, although synchronization may pause. Check the mailbox online after service returns. Messages that were never successfully sent may need to be sent again, so verify the Sent Items folder first.

Should I reinstall Outlook if it will not open?
Not as the first step. Check service status, restart the device, install available updates, and see whether webmail works. Reinstallation or profile repair is more appropriate after simpler checks, ideally with guidance from IT for a managed account.

Does a Microsoft 365 outage affect every Outlook user?
No. Incidents can affect particular services, tenants, regions, or features. A work account, Outlook.com mailbox, and third-party account opened in Outlook may therefore behave differently during the same period.

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