DIY How To Fix Outlook Express Errors

Outlook Express is a popular email program that can malfunction due to a number of reasons, including internet connection problems, registry errors, or even malware infections. When you open Outlook Express you get various errors, such as Error 550 or Error 11004. There are numerous errors of this type that can interfere with your ability to use Outlook Express.

What are Outlook Express errors?

Outlook Express was the default mail program for several versions of the Windows operating systems leading up to Windows Vista; even though it’s no longer the default program for newer OS products, it is still compatible. It’s a simpler version of Outlook, which is often used for businesses’ email platforms. If you have an issue with Outlook Express, you will often get an error message either when you attempt to open the program, or when you try to send a message.

What causes Outlook Express errors?

Outlook Express errors will occur if the program can’t access an Internet connection, or has failed to connect with the mail server. Once you verify that you have an Internet and network connection in place, errors may be the result of mis-configured settings, or damaged Windows registry files that are used by Outlook express.

How do I fix Outlook Express errors?

The good news about Outlook Express errors is that many of them can be fixed by the user, even if you don’t have a lot of expertise when it comes to Windows repair or even your computer in general. To start, check your Internet connection, network connection, and run your anti-virus software as malware may be interfering with Outlook Express. You should also delete any suspicious emails from your inbox if you are able to access it.


Option 1: Checking Your Account Settings

    1. Press the Windows key and “R” key at the same time to bring up the Run dialogue box.
    2. Type “Control Panel” (no quotations) into the Run box and click “OK.


    1. Click on the “View by” drop down menu and choose either “Large icons” or “Small icons” from the list of options. Click on the “Mail” icon in the list of settings. Note that you will only see this option if you already have Outlook Express installed completely. The Mail Setup box will open automatically.


  1. Click on “Show Profiles” in the Mail Setup window and then go to the General tab. Click on the “Prompt for a profile to be used link,” which is just under “When starting Microsoft Office Outlook, use this profile.”
  2. Click on the “Add” option. You will have to choose a name for your email profile, such as your name or the purpose for the email, like “Work.” Click the “OK” button once the profile has been successfully named.
  3. Once the E-mail accounts box opens, click on “Add a new e-mail account” and choose “Next.” Choose a server type and then enter your email address, password, and other requested account details. Click on “Finish” to complete the configuration of your email address.
    Once you have properly configured your email account, your computer should be able to properly send messages and fetch incoming mail. If you have an old configuration for your email account, delete it to ensure that Outlook Express uses the new configuration.

Option 2: Re-register DLL Files

DLL is short for Dynamic Link Library. The files saved in this library are used by a number of programs; they can’t be opened independently, but rather always function as a part of another program. DLL files allow your computer to load data, embed media, and complete other basic functions like recognizing hyperlinks. Some of these files are associated with Outlook Express, and if they are damaged or mis-configured within the Windows registry you will see error messages. To fix the issue, you need to reregister essential DLL files. This reinstalls the DLL files and will stop errors if they are the root of your problem.

    1. Press the Windows and “R” key to bring up the Run dialogue box.
    2. Type “regsvr32 urlmon.dll” (no quotations) in the open box and click the “OK” button.


  1. Repeat Step 2 for each of the following DLL files, one at a time.

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