Sending or receiving reported error (0x80042109) in Outlook

If you’re getting an Outlook Error 0x80042109 on your Windows 10 PC when you try to send e-mail messages, this post may help you fix the problem. For some users, this error can be a serious issue, preventing them from using Outlook. In this article, we’ll explain a few potential ways to overcome the error.

If you are having problems sending emails from Outlook, it may be because it cannot connect to your outgoing (SMTP) email server. If this keeps happening, try contacting your server administrator or internet service provider (ISP). Error 0x80042109.

Sending or receiving reported error (0x80042109)

If you want to fix the Outlook Error 0x80042109, follow the below suggestions:

Check your Internet connectivity
Remove your Outlook Account and Add it again
Change server port number
Disable your Windows Firewall temporarily

Check your Internet connectivity

Slow or sluggish network performance can be the primary cause of this Outlook error. First, check your network connection and make sure it is running smoothly and correctly. If possible, try changing your Internet service provider (ISP) Internet connection to see if that resolves the problem.

Remove your Outlook Account and Add it again

Another method you can try to fix this issue is removing the Outlook Account and adding it again.
To do this, open the Settings app first and then select the Apps category.

Go to the right pane and select the Outlook app under Apps & features.

Click on the Advanced options, scroll down to the Reset section, and then click on the Reset button.

After resetting your account, add your account information again. Now, wait for a while until it completes the synchronization process.

Change server port number

If you find the Error 0x80042109 on your computer, it’s a good idea to change the server port number.

Open your Outlook and navigate to File > Info > Account Settings.
Click the drop-down menu and again select Account Settings.
In the Account Settings page, go to the Email tab and then double-click on your email account.
Go to the bottom-right corner of the next page and hit More Settings> Advanced.
In the dialog box, set the Outgoing Server (SMPT) to 587 (by default it should be 25) and select the type of encrypted connections as TLS.
Then click OK > Next > Finish to save the changes.
Now relaunch the application and check if it helped you to fix the problem.

Disable your Windows Firewall temporarily

If you’re having trouble connecting to a website or online service, one of the first things you should try is disabling your firewall or any third-party applications that might be running.

If you can’t seem to find a fix that works, try contacting your server administrator or internet service provider for help.