since 2000
All about MAILHOST Files
The MAILHOST file type is primarily associated with MSN Explorer.
What is a MAILHOST file?
MAILHOST files mostly belong to MSN Explorer by Microsoft Corporation. If you are an MSN subscriber and having trouble with their service please contact MSN support for help. If you have a specific problem with the .MAILHOST file extension you can try this solution which has been confirmed by MSN to work: Click on the Start and then Run items. In the dialog box type: regsvr32 c:\progra~1\msn\msncorefiles\mailui.dll ...and then click on OK or press the Enter key (use cut/paste to be certain you've got it right). In case it wraps in your display, this is all one line with a space between the regsvr32 and pathname. This reregisters the mailui.dll file and solves the problem. If you are signed into MSN, sign out and then sign back in and everything should work OK. If, for some reason it does not, please go back to step one and contact MSN support.
How do you open MAILHOST files?
You need a suitable software like MSN Explorer to open a MAILHOST file. You need a suitable software like MSN Explorer from Microsoft Corporation to open a MAILHOST file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your MAILHOST file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a MAILHOST file directly in the browser:. Just drag the file onto this browser window and drop it.
Online MAILHOST Text Viewer
or drag and drop it here
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4 Steps to Open an Unknown .MAILHOST File
Because .MAILHOST files can originate from different programs, they aren't universally openable.
- Identify the Source: If found in legacy Windows folders, it likely relates to Microsoft's MSN Explorer. If received from an IT admin, it may be a custom server config.
- Check the Header: Inspect the first bytes in a text editor or hex viewer:
- Readable text/XML suggests a standard configuration.
- "PK" indicates a zipped archive.
- Unreadable binary implies a proprietary format.
- Use the Original Software: The original program is usually required; try MSN Explorer, Notepad, or ask the sender if uncertain.
- Use this Webpage: Drag and drop your file into our viewer to detect its format, extract readable text or metadata, and preview contents.
Technical Data for MAILHOST File Extension
Program ID:
MSMail.MessageList.View
Related files:
Related links:
a mailhost E-mail Server Preferences File is a special file format by Microsoft Corporation and should only be edited and saved with the appropriate software.
How to solve problems with MAILHOST files
- Associate the MAILHOST file extension with the correct application.
- Update your software that should actually open e-mail server preferences files. Because only the current version supports the latest MAILHOST file format. Search, therefore, e.g. on the Microsoft Corporation manufacturer website after an available MSN Explorer update.
- To make sure that your MAILHOST file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
- Click here to open your .MAILHOST file online - secure, fast, and no downloads needed.