MAML file format description

Many people share .maml files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .maml file can be edited, converted or printed with. On this page, we try to provide assistance for handling .maml files.

1 filename extension(s) found in our database.

.maml - Microsoft Assistance Markup Language Data

The MAML data files are related to Microsoft Windows Vista. The MAML file is a Microsoft Assistance Markup Language Data. Microsoft Assistance Markup Language (MAML) is an XML-based markup language developed by the Microsoft User Assistance Platform team to provide user assistance for the Microsoft Windows Vista operating system.

Microsoft Windows Vista
Data files
- / -
Microsoft Assistance Markup Language Data related extensions:
Microsoft Expression Web Text Data
Microsoft Money 98 Backup Data
Microsoft Windows ReadyBoost File
Microsoft Word for Mac Template
Microsoft Windows Event Viewer Log
Microsoft Photosynth Deep Zoom Collection

Naturally, other applications may also use the .maml file extension. Even harmful programs can create .maml files. Be especially cautious with .maml files coming from an unknown source!

Can't open a .maml 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 can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .maml file extension is often given incorrectly!

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

aml, haml, mal, mam, mamp, mml, mxml

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Media Catalog MML File
Mathematical Markup Language Document
AutoMate Markup Language Data
Gordano Mail Meta Language Source Code
MadAppLauncher Configuration
Mercury Motif Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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