How to fix Microsoft Outlook Error 0x80042109?

Microsoft Outlook is a Microsoft application that enables the users to organize your emails, calendar, contacts, tasks and to-do lists. This application plays a crucial role in increasing the productivity. But sometimes while using this application, used fails to use it smoothly and they get stuck issues.

One instance of such errors is “Microsoft Outlook error 0x80042109”. This error appears while sending messages via Outlook.  The full error message reads as:

“Sending reported error (0x80042109) : Outlook cannot connect to your outgoing (SMTP) e-mail server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).”

When this error occurs, the outgoing email fails to reach the receiver and the message with information about email server issues appears on the screen.

It’s pertinent to mention this error, it should not be overlooked. As it may leads to system slowdowns, freezes, crashes and so on. And if we talk about the reasons, some of the potential factors are as follows:

#. Presence of Malware on the PC

#. Incomplete/ inappropriate installation of Outlook

#. Incorrect Account Settings

#. Pending Updates of Outlook

#. Corrupt PST or email

#. Internet Connection

These were some of the potential culprits that cause the above mention error.  Now let’s have a look on the solutions.

Ty these Workarounds for Microsoft Outlook Error 0x80042109

Method 1: Install Pending Windows Updates

In the first method we suggest you to install all the pending updates, to proceed with the method, follow the below mention guidelines:

Step 1: Click Start and then type Updates in the search box or just locate the Windows Update section > search for uninstalled updates in the section & right-click on each one to start the process.

Method 2: Check your Internet Connectivity

In this method you are suggested to check whether the PC is connected properly to the internet and has a stable internet connection. If the connection is not stable, you won’t be able to send or receive an email.

Here’s how:

Step 1: Restart your Modem and Router and create a wired connection

Step 2: Restart your PC and disable VPN and Proxy

Step 3: Run Windows troubleshooter > Once done then see if the issue resolved or not

Method 3: Disable Antivirus Software and Firewall

Sometimes Antivirus Software conflicts with the email applications & stops the users from using it, so it’s better to disable it temporarily.

Here’s how:

Step 1: Open the Control Panel and then click on the option System and Security

Step 2: Click on Windows Firewall and then tap on “Turn Windows Defender On or Off”

Step 3: Lastly turn off the Firewall and click on OK

To disable Antivirus, right-click on its icon and then click on disable> Confirm whether the process is complete by pressing Alt+Ctrl+Delete. There should be any Antivirus-related process running in the Task Manager.

Method 4: Change Outgoing Port

A Standard Outgoing SMTP ( Simple Mail Transfer Protocol) port’s value is by default set to 25. Now, it seems that many ISPs are blocking this port value and thus, you are unable to send emails. In such case, you have two options:

#. Change SMTP Value to 26

#. Switch to TLS Port and choose 587

The second option is non-standard port value but, nonetheless, a proven solution for this issue. Follow these instructions and we should be good to go:

Step 1: Open Outlook > Choose Tools

Step 2: Choose Tools > Open Account Settings

Step 3: Double-click on the troubled email address

Step 4: Choose More Settings > Open Advanced

Step 5: Now set Outgoing server SMTP Port to 587 and select TLS encryption

Step 6: Confirm selection and look for changes.

Method 5: Remove your account and add it again

If you are still struggling with Microsoft Outlook Error 0x80042109, you can try to remove your account from Outlook. You can also completely reset the app by navigating to Settings > Apps > clicking on Outlook and accessing Advanced Options.

Once there, click Reset > Then, add your account again, configure it and wait until it fully synchronizes. Once done then see if the issue resolved or not.

Method 6: Disable proxy Server

You may also try to disable proxy server, to do the same, use the following guidelines:

Step 1: Click Win Key + S and type cmd in the search box to open Command Prompt > Right-click on Command Prompt and select Run as Administrator

Step 2: Now you have to disable proxy via Network Settings

Method 7: Remove Junk files via Command Prompt

Several users have claimed that removing junk files via Command Prompt, so you can also try the same for yourself.

Here’s how:

Step 1: Click Win key + X keys and select Command Prompt (Admin) > Once the Confirmation window shows up, click Yes

Step 2: In the Command Prompt window, type cleanmgr command and press Enter key

Step 3: Now the system should be scanning for junk files and removing them automatically. When the window is shown to you, mark all the checkboxes that are marked alongside system locations that contain unwanted system files.

Step 3: Lastly, click OK and close Command Prompt

Method 8: Perform System Restore

If none of the above mentioned methods works for you we suggest you to perform System Restore, to do so follow the below mention guidelines:

Step 1: Reboot your PC and log on as an administrator > Right-click the Start button and then select System

Step 2: In the left pane, click System Protection > Now click System Restore to open the System Restore Window

Step 3: Click Next > Select the most recent System Restore Point and then click Next

Step 4: Select the most recent system restore point and then click Next > Click Finish

Conclusion!

That’s all folks!  We assume you liked this article Microsoft Outlook Error 0x80042109. We have tried our best to provide all the possible methods to resolve the error. Now it’s your turn to follow our guidelines.