How to open a file with .MAILHOST extension?

File Type : MSN Explorer E-mail Server Preferences File (Microsoft Corporation)
Compatible with (Win10, Win8, Win7, Vista and WinXP)

You'll need a new app to open this .MAILHOST file

Searching for the right program to open .MAILHOST files?

"You'll need a new app to open this file" is probably the most common error faced by millions of Windows users every day. This is either because the program required to open a file is not available on your system or there may be other issues.

We recommend that you run a free scan to check for missing drivers.


What is .MAILHOST file extension?

Stores preferences for the e-mail server used by MSN; installed with MSN software and required for MSN to check and send e-mail; typically named "MSN#.mailhost." If the Mailhost file is corrupt or missing, the MSN software may display a "Mailhost File" error. To recover the Mailhost file, first select "Run..." from the Windows Start menu. Then type the following in the text box: regsvr32 c:\progra~1\msn\msncorefiles\mailui.dll This should restore the Mailhost file and allow MSN to communicate with the mail server again. Also see the related .DOWNLOADHOST entry.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.

Software that can be used to open MAILHOSTfiles:

  • Microsoft MSN software