A daily updated filename extension database!

MDO file extension

The table below provides useful information about the .mdo file extension. It answers questions such as:

  • What is the .mdo file?
  • What program do I need to open a .mdo file?
  • How can the .mdo file be opened, edited or printed?
  • How can I convert .mdo files to another format?
  • Where can I find the specifications for .mdo?
  • Which MIME-type is associated with the .mdo extension?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

Microsoft IIS Metabase Backup

MDO file is an Microsoft IIS Metabase Backup.
Category: Data files
Application: Microsoft IIS Server
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
MDO aliases:
MDO related links:
MDO related extensions:
Microsoft IIS NNTP Subject Lists

Microsoft IIS NNTP Header Data

Microsoft IIS Schema Backup

Other types of files may also use the .mdo file extension.

The .mdo file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

md, mxo, dmo, mro, mo, meo, mdl, mdi, ldo, ndo, do, mso, mod, mfo, mdp

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Chaos Desktop Metadata
Mayura Draw Document
Sega Genesis ROM MD
MuseData Score
TI Derive Demo
STAR-CD v4 Model Data
Microsoft Document Imaging File
Max Macintosh External Object
Music Module MOD
Duke Nukem 3D Demo File

Can't open a .mdo file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .mdo file association, check the FAQ.

Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .mdo file extension, write to us!

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