How to Remove File Associations to Microsoft Access

A file association links a particular file to an application that may open it. The good news is that you can remove file associations with Microsoft Access. how-to-remove-file-associations-to-microsoft-access

How to Remove File Associations to Microsoft Access

Associating a class of files with the appropriate program is the function of file type associations. As a result, every file in this is open with a default associated application that may open the file.

  • Step 1: Run Registry Editor


    To locate the Registry Editor, go to the “search” icon on your computer, type in “Registry Editor” and hit enter. You can also run “regedit.exe” to launch the Registry Editor, then navigate to HKEY CLASSES ROOT.

  • Step 2: Remove File Associations for Microsoft Access


    Once you are in the Registry Editor, you have to locate the file associations related to Microsoft Access. Most of these file associations are .mas, .mar, and .mat. Select the folder containing the Microsoft Access association and perform the delete function by right-clicking on your mouse and finding the delete option. You can also use the delete button on your keyboard.


What is a file association?

A file association links a particular file with an application that may open it, much as it links a certain file type to a specific program, and the filename extension frequently indicates the type of the file; for instance, the .docx files might be connected to Microsoft Word.

When should I remove a file type association?

Although very useful, a file type association could get corrupted, and as a result, a file will be opened with another application that is not suitable; so, in order to stop the file from opening automatically with the related app in this situation, you have to delete the file type associations.

Can I restore the deleted file association?

Yes, there are actually two ways to restore file associations if you feel the need to go back to the default ones: through Windows settings and through the DISM tool.

How can I restore file association via Windows Settings?

In order to restore file association via Windows Settings, press Windows + I (the shortcut key to open the Windows Settings), then select the Apps category and click the Default apps section in the left pane, and in the right pane, click the Reset button to reset to the Microsoft recommended defaults.

How can I restore file association via the DISM tool?

On a working desktop computer, launch Command Prompt as administrator, input the following command line: (dism/online/Export-DefaultAppAssociations:”%UserProfile%\Desktop\DefaultAppAssociations.xml”), press the Enter key (this will generate an .xml file on the desktop and export the computer’s default file association), then connect the prepared USB drive to the computer and copy the created file to it, disconnect the USB drive and connect it to your problematic PC and move the file to the desktop, run Command Prompt as administrator on this PC, type the following command: (dism/online/Import-DefaultAppAssociations:”%UserProfile%\Desktop\MyDefaultAppAssociations.xml”), press the Enter key, and by restarting, your computer should successfully restore the file type association on your PC.