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January 30, 2026
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I uninstalled the New Outlook app and reinstalled it and that didn't fix anything. I am fairly sure it is something in my Microsoft account since all 4 of my Windows computers stopped working for the email at the same time. I have another Windows computer with a different Microsoft account and that is webpage working fine.
Have you changed your password recently?
Go to your Outbox and then open the stuck email messages. If that message has an attachment that's larger than 20MB, delete the attachment and either attach a smaller file or attach a link to the attachment. For more information, go to Reduce attachment size to send large files with Outlook or Exchange Online limits. For more information, go to Reduce attachment size to send large files with Outlook. I deleted the Yahoo and Google accounts from Outlook and set it up again and that didn't fix anything.
New Outlook Cannot Send and Receive Email
Which means that you won’t be able to receive new messages.Articles, examples, tutorials, and inspiration from our emailing experts.For more information, go to Reduce attachment size to send large files with Outlook or Exchange Online limits.This is a great way to protect your inbox from spammers and cyberbullies.Fortunately, you can change how your messages get organized.If an email triggers the spam filters, Microsoft automatically moves it to your junk folder.But still, it’s worth checking if other users are currently experiencing similar issues with Outlook.
For details around general troubleshooting, visit Troubleshooting Outlook issues for more information. To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help?
How’s your storage limit?
Sign up for tips and industry insights to level up your emailing skills. Outlook lets you block a sender or a domain in just a few clicks. This is a great way to protect your inbox from spammers and cyberbullies.
To disable all add-ins, you can start Outlook in safe mode. If you can send email while Outlook is in safe mode, creating a new Outlook email profile should allow you to send email again. For many types of email accounts, classic Outlook stores your messages in a Personal Folders File (.pst file).
Getting Started Is Easy
Articles, examples, tutorials, and inspiration from our emailing experts. Create your account and connect with a world of communities. Find solutions to common problems or get help from a support agent. Occasionally, the Outlook program may need to be repaired. Repairing is a simple process but may take as long as half an hour to complete. For more information, see Repair an Office application.
I can't send or receive messages in Outlook
The methods provided in this article can be used to troubleshoot the error messages listed in the following table. But every once in a while, the Microsoft filters get it wrong and accidentally label a normal email as spam. To start Outlook in safe mode, press the Windows key on your keyboard. In the search box, type outlook.exe /safe, then press Enter. If you've changed your password on the website for your email account, you'll need to change it in new Outlook, too.
Edit your filter settings
For some users, e-mails do not arrive without manually sending and receiving them. If you are having sync issues, you can force a manual sync Outlook profile repair and recovery steps by selecting the Sync button via the View tab on the Ribbon. A status message appears at the bottom of the message list while Outlook is syncing. For more information, please go to Sync to manually check for new mail and to send messages in Outlook. Sometimes, an Outlook add-in will crash and prevent your email messages from sending.
Checklists
You can repair this file by running Repair Outlook Profile Online the Inbox Repair Tool. This repair should take approximately fifteen minutes. For more information, see Repair your Outlook personal folders file (.pst). A profile is a group of settings that controls how Outlook works. It includes a listing of your accounts, autocomplete information, and your name and initials. To repair your Outlook profile or create a new one, see Fix your Outlook email connection by repairing your profile.
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January 12, 2026
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If both are signed in simultaneously, the system can confuse the authentication path. Log out of all accounts and sign in with only one — preferably the one with your Office 365 subscription. Fix issues with Windows, browsers, email, and other essential tools. Incorrect mail servers or ports will force Outlook to ask for credentials repeatedly. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
Fix 5 — Delete Cached Tokens & Re-Authenticate
To do so, open your browser and go to the help or about menu to check if there is an update available and install it.The Additional Details provides more details and often tells you how to resolve the issue.Sometimes, the problem may not be with your browser or system, but with your network or device.We’re committed to delivering helpful, professional tech support.In addition, the sign-in logs can also help you troubleshoot sign-in failures for users in your organization.To rule out these possibilities, try using a different network or device to log in to the website.If you’re not satisfied, we’ll continue working with you until the issue is resolved.
A developer console is a feature of most browsers that can be used to inspect and modify the code and elements of a website. To access it, open your browser and go to the website you are trying to log in to, then right-click on the login page and select inspect or inspect element. This step-by-step guide walks you through proven fixes for Outlook with Microsoft 365, Exchange, IMAP/POP, and hybrid accounts so you can sign in once and stay signed in. Another potential cause of login issues is that your browser or system may be outdated or incompatible with the website you are trying to access. To address this issue, updating your browser and system can help fix any bugs, improve your security, and enhance your compatibility.
⃣ Update & Repair Microsoft 365 Apps
FixTech helps you resolve computer, software, and device issues – fast, secure, and hassle-free. Stale cached credentials are the #1 reason for looping prompts. The Failure reason and Additional Details might provide you with the details and next steps to resolve the issue. The Additional Details provides more details and often tells you how to resolve the issue. For iPhone users, reinstalling Outlook or updating to the latest iOS often resolves stuck sign-in loops instantly. Many users have both personal Microsoft accounts (e.g., Outlook.com) and work/school Office 365 accounts.
🔍 Understanding Office 365 Login Issues
On managed devices, broken work account tokens cause Outlook loops. If all else fails, or the issue persists despite taking the recommended course of action, open a support request. For more information, see how to get support for Microsoft Entra ID. If you need more specifics to research, you can use the sign-in error code for further research.
And Support
Always enable Set time automatically and select the correct region in your Windows settings. If your clock is Exchange Connectivity diagnostic even a few minutes off, login may fail. In addition, the sign-in logs can also help you troubleshoot sign-in failures for users in your organization.
Fix Office 365 Login Problems on Windows & Web (2025 Guide)
If your admin enabled Modern Authentication (MFA), try disabling it temporarily via Azure Active Directory → Properties. Alternatively, generate an app-specific password if using Outlook 2016 or older. Tell us the issue, no long waits, no tech jargon.
Fix 9 — Windows Work/School Account Re-Join (Work PCs)
To do so, open your browser and go to the help or about menu to check if there is an update available and install it. Then, open your system settings and go to the update or security menu to check if there are any updates available. Install them if Outlook Login Issues Troubleshooting necessary and restart both your browser and system. Login issues can be frustrating and time-consuming for both customers and customer support agents.
Check the basics
To rule out these possibilities, try using a different network or device to log Repair Outlook Profile Online in to the website. For example, you can try using your mobile data instead of your Wi-Fi, or using your smartphone instead of your laptop. FixTech provides technical support services to help diagnose and resolve common device and software issues.
If you need to reset your Microsoft account password because you forgot it, see Reset your Microsoft account password instead. This resets your authentication cache and forces a fresh token request.
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