Fix Microsoft Outlook not sending emails on Windows 11 and 10

User Query: “I was ready to kickstart my Monday Blues with my work emails but as I went to send the mail, there was an issue. All my emails seemed stuck and left me all frustrated. Can you help me with this issue? ”

From urgent client emails to critical project updates, the inability to send and receive emails can disrupt your workflow. In this guide, you will get the probable reasons and 100% effective solutions to fix Microsoft Outlook not sending emails on Windows 11 and 10.

Common signs of Outlook not sending emails on Windows 10, 11

You may face this Outlook issue if:

• Emails remain stuck in the Outbox.
• Outlook shows send or receive errors.
• You can receive emails, but can’t send.
• Outlook freezes while sending emails.
• Error codes like 0x800CCC0E or 0x80042109 appear.

Outlook not sending emails on Windows 10, 11 Issue: Major Reasons

Check out all the possible reasons for Outlook not sending emails on Windows 11 and 10 issues.

• Disconnected Outlook.
• Improper or no internet connection.
• Bulky messages or attachments.
• Wrong password.
• Antivirus programs prevent emails.
• Corrupt Outlook profile.
• Corrupt Outlook program.
• Improper antivirus and firewall settings.
• Wrong recipient address.
• Incorrect/misconfigured email account/server settings.

Fix Microsoft Outlook not sending emails on Windows 10, 11 [Free Ones]

Before proceeding with solutions, just check your internet connection stability. Sometimes, due to a weak internet connection, sending/receiving issue of emails occur. If the issue is not resolved, then check the following methods to fix Microsoft Outlook not sending emails.

Method 1: Check if Outlook is connected

If you see messages like “Disconnected,” “Working Offline,” or “Trying to connect…Outlook can’t reach the email server to send your mail,” then your Outlook is not connected to an email server. So, try to bring Outlook to Online mode. To do so in Outlook, follow the steps given below:

1. Go to Send/Receive > Preferences > Work Offline
2. Turn Work Offline to Work Online.
3. Open the message and resend it, or choose to send/receive.
4. Check whether the issue is fixed or not.

Method 2. Check if your messages are large or have large attachments

Some email providers do not allow messages exceeding their prescribed size. The default maximum size for outgoing emails is 25MB & incoming emails is 50 MB. Further, adding images, videos, and large attachments also adds to the size of messages. To check this aspect of messages, go to Outlook and open an email message stuck in the Outbox. If you find that this message has an attachment with a size larger than 25MB, then it will not be sent. Try to reduce the size of the attachment & then check the status of the issue.

Method 3. Recall if you have changed your password recently

Try to recall if you have changed the password of your Outlook profile; if you have changed, then try to use your new password and if you have and if you have forgotten it, then try to change your password.

1. Go to File > Account Settings > Account Settings.
2. Select your email account on the email tab and select Change.
3. Enter a new password.
4. Select Next > Close > Finish.

Method 4. Check Anti-virus scanned results

Maybe your antivirus software is preventing you from sending or receiving emails while scanning emails. If an antivirus program has found a virus, then it needs to be removed first so that Outlook can start sending/receiving emails.

You should scan for viruses and resolve them. After resolving the virus, you can turn off the antivirus protection to make sending/receiving emails work.

Method 5. Repair your Outlook program

Sometimes you may need to repair the Outlook program as its minor or technical glitches can also cause the same issue. This is an easy but time-consuming process. Let’s try to solve Outlook not receiving emails by repairing the Microsoft Office with the following steps:

1. Open Control Panel, go to Programs and Features.
2. Search for Microsoft 365, click on it, and tap on the Change option.
3. Choose the Quick Repair > Repair option. It will start the repairing process. Once it’s done, check the status of the issue.

Method 6. Repair your Outlook profile

Issues in your Outlook profile will prevent you from connecting to your email through Outlook. So, to overcome this issue, try to repair your Outlook profile.

1. In Outlook, go to File > Account Settings > Account Settings.
2. Choose your account (profile) on the Email tab. Select Repair. Follow the instructions to repair.
3. Restart Outlook once the repair is done.

Method 7. Start Outlook in Safe mode & disable faulty add-ins

Any of the Outlook add-ins may be responsible for the prevention of your email messages from sending. To fix the issue, first identify the faulty add-ins by opening Outlook in safe mode. If it starts, it means there is an issue with the add-ins. After that, disable it accordingly. Follow the steps given below to implement the process correctly.

1. Press Windows key + R, type Outlook.exe /safe, & click OK.
2. It will open Outlook in safe mode.
3. If it works, then you must disable the faulty add-ins. Restart Outlook, go to File > Options tab. Go to the Add-ins > Go options.
4. Disable all add-ins & click OK. Now, enable them one by one & check the status of the issue. If found the faulty one, remove it.

Method 8. Run Inbox Repair Tool

It is possible that your Outlook data file has minor corruption or some inconsistencies. This corruption can also be a potential reason for the inability to send messages. In that case, you can take the help of Outlook’s built-in Inbox Repair Tool. It scans the file first & provides you with the cause of the issue. Then, by using its Repair option, you can fix that issue easily.

What to do when manual methods fail?

As stated above, corruption of Outlook PST files may lead to the inability to send emails in Outlook. If it is severe, manual methods can’t help you achieve successful results. Also, they can lead to data loss situations if steps are not performed correctly.
IT experts recommend that instead of the manual methods, taking help of the advanced solution can be the most suitable approach. Recoveryfix is the one name whose advanced tools always outperform in each category. One such smart tool is the Outlook PST repair tool that handles each type of corruption easily & provides desired results without data loss.

The tool recovers the entire content of your Outlook mailbox, including Inbox, Outbox, Notes, Contacts, Drafts, Journals, and deleted items like email, attachments, etc. It can repair even password-protected or archived PST files. You can save them to a platform of your choice, like Office 365, Exchange Server, Outlook PST, & Gmail, and in any format of your choice, like DBX, MBOX, MSG, EML, RTF, HTML, MHTML, etc., with original metadata.

Preventive tips to avoid Outlook sending issues

Here are some basic tips that can help you reduce the chances of Outlook sending issues.

• Keep Outlook & Windows updated.
• Maintain stable internet connectivity.
• Disable unnecessary or faulty add-ins.
• Avoid dealing with oversized attachments.
• Regularly backup PST files for extra safety & easy accessibility.

Fix Outlook not sending or receiving emails: End thoughts

Fix Microsoft Outlook not sending emails using the provided solutions. Make sure to follow the steps in the correct order to avoid any unusual mishaps. In my opinion, if the cause of the issue is severe corruption, you should go with the recommended Outlook PST Repair tool. It not only fixes the issue but also maintains 100% data integrity. Try out the tool’s free version today for safe, secure, and quick repair.

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FAQs

Q- Why can I send emails from Outlook web but not from the desktop app?

A- It usually indicates issues with the desktop configuration, profile corruption, or local firewall or anti-virus restrictions.

Q- Do the incorrect date & time settings also affect Outlook email sending?

A- Yes. An incorrect system time may cause authentication failure with the mail server.

Q- Can switching networks fix Outlook sending issues?

A- It works in most cases, as some networks restrict SMTP ports. So, changing the networks might solve Outlook not receiving emails issue.

Q- Why does Outlook fail to send emails with attachments only?

A- Large or unsupported attachments may exceed server limits, which can also cause sending failures.