MSMESSAGESTORE File Extension

Windows Mail Message Information Database

File Type msmessagestore
Developer Microsoft Corporation
Popularity
4.1 (36 votes)
Application Windows Live Mail
Category Data Files

What is a MSMESSAGESTORE file?

The MSMESSAGESTORE extension is related to Windows Mail Message Information Database and is classified in the Data Files category, which contains 6196 files.

The Windows Mail Message Information Database (MSMESSAGESTORE) was created by Microsoft, a company that developed file format and produced 242 programs for their use.

MSMESSAGESTORE file support extends to various operating systems, including Windows. If you need to open a MSMESSAGESTORE file, you can use one of 2 programs, such as Windows Live Mail and Windows Mail.

Programs that support MSMESSAGESTORE files

Windows ²

Windows

How to open a MSMESSAGESTORE file?

If you’re having difficulty opening a MSMESSAGESTORE file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.

Thanks to their popularity, Windows Live Mail and Windows Mail are often the go-to programs for managing MSMESSAGESTORE files. To install the updated version of Windows Live Mail, simply go to the Microsoft site and download the installer compatible with all major platforms.

When you finish installing Windows Live Mail, the system will automatically launch MSMESSAGESTORE files with it.

Set Windows Live Mail to open MSMESSAGESTORE by default

Change default apps on Mac

Right-click or use Control + Left-click on the desired MSMESSAGESTORE file to access the file’s context menu;
Choose "Open in Application" and click "Other";
At the bottom of the window, you will see the "Enable" menu. It is already set to the default option, "Recommended Programs";
Within this menu, select "All Programs" and then search for Windows Live Mail. Check the box next to "Always open in app" to make it the default program.

Change a default app in Windows

Start by right-clicking on your MSMESSAGESTORE file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
Find the Windows Live Mail application in the pop-up window and select it as your preferred program;
Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening MSMESSAGESTORE files.

Easy MSMESSAGESTORE Troubleshooting

When facing challenges with MSMESSAGESTORE files, simple adjustments in your software can often solve the problem. Find helpful troubleshooting guidance below.

Why does Windows Live Mail stop responding or crash intermittently?

Insufficient software updates can contribute to Windows Live Mail crash. To avoid this, make sure that you have installed the latest updates for Microsoft products.

Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.

What are the best practices for repairing a MSMESSAGESTORE file that has gone bad?

Open the damaged MSMESSAGESTORE file in Windows Live Mail or Windows Mail and select the "Repair" menu item to start the repair operation. Wait for the recovery process to finish, allowing automatic repair of damaged data files.

What are the methods to detect if my MSMESSAGESTORE file has been corrupted?

Characteristics of corrupted MSMESSAGESTORE data files can include:

Unexplained MSMESSAGESTORE file size inflation;
The file stops responding or freezes in Windows Live Mail or other programs;
The file does not respond or shows errors when opening it;
While working with the file, error alerts are encountered;
Editing the archive in Windows Live Mail is hampered by poor overall performance;

How to edit a MSMESSAGESTORE file?

To modify MSMESSAGESTORE files, you need to install special software that makes it possible to open and edit data files. Online MSMESSAGESTORE editors are more restricted compared to software designed for Windows Mail Message Information Database.

Best MSMESSAGESTORE Editor Software in 2026

After analyzing the criteria, we have created a list of MSMESSAGESTORE editors available for use.

MSMESSAGESTORE Editor Software	Developer	Platforms	Overall Rating
Windows Mail	Microsoft	Windows	4.8 out of 5 (40 reviews)
Windows Live Mail	Microsoft	Windows	4.3 out of 5 (41 review)

‹ MSO | MSM ›