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19 February 2008 @ 4am


Is MSOE.DLL Essential for Outlook Express?

Msoe.dll is a module containing the functions relevant to the Microsoft Outlook email client. It is also know as Outlook Express Library. Developed and owned by Microsoft, msoe.dll is not a critical system file and can be deleted or disabled if you are not using Outlook Express. As a main 32-bit dynamic link library component, msoe.dll is provided with the original Microsoft Windows installation disk.

The most common errors in connection with msoe.dll are caused by several versions of the same dll file existing within one computer system. The presence of many msoe.dll files will confuse the system and cause instability in the Outlook Express application. Another possibility for errors is the presence of a virus, most likely a Trojan or worm, in your computer. This could cause the system to repeatedly announce “pseudo-errors”.

Errors and Solutions

“Outlook Express could not be started because msoe.dll could not be loaded”

This error is common in earlier versions of Windows, such as ME. It is caused by the removal of Windows Address Book. It also occurs if there two instances of Outlook Express installed in your computer. To solve the problem in case it is the first cause, simply restore the Windows Address Book by going to Control Panel, Add/Remove Programs, Windows Set-up and selecting the Address Book check box. Select Ok and restart your computer for changes to take effect.

In case the error is caused by the second issue, you will need to manually remove the current Outlook Express installation from the system and reinstall a fresh copy from the installation CD files. Make a backup of your Outlook Express files and Address Book before staring the repair process. There is a lot of registry editing and folder replacing required in reinstalling a completely new copy of Outlook Express, and it should be done with the utmost care.