For some users, e-mails do not arrive without manually sending and receiving them. If you are having sync issues, you can force a Outlook OST vs PST repair manual sync 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.

Repair your classic Outlook program

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. 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 fix Outlook after Windows update issues 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.

Make sure you are connected to the Internet

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.

Check your blocked users list

If you've changed your password on the website for your email account, you'll need to change it in new Outlook, too. 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. If an email triggers the spam filters, Microsoft automatically moves it to your junk folder.

Create a new Profile

But if you’ve never cleaned your inbox, then you might have maxed out your storage limit. So if you’re waiting for an email from someone, you may want to check if the sender is registered on your blocked users list. But still, it’s worth checking if other users are currently experiencing similar issues with Outlook. Microsoft comes with a great option called Work Offline.

Can't send mail in Outlook.com

• If you’re using cPanel, Outlook is most likely setup with POP3 account or IMAP.
• Find solutions to common problems or get help from a support agent.
• A status message appears at the bottom of the message list while Outlook is syncing.
• I did a search on this forum and tried several of the suggestions but non appeared to work.
• But if you’ve never cleaned your inbox, then you might have maxed out your storage limit.
• Outlook needs a working internet connection to reach its email servers.

For many types of email accounts, classic Outlook stores your messages connection status Shows disconnected in a Personal Folders File (.pst file). You can repair this file by running 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.