LCK File Type

- The quick facts

What are LCK files and how to open them

Are you having problems opening a LCK file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a LCK file?

Files that contain the .lck file extension are locked files that have been created by a variety of database software applications.

When a user has a shared database file open on his or her computer and another user tries to open that file, a LCK file will be automatically created. This file allows the second user to view the contents of the database but prevents them from making any changes. This prevents information in the database file from being accidentally overwritten or deleted.

One the user has closed the LCK file, the file is normally deleted automatically by the software application.

How to open LCK files

Important: Different programs may use files with the LCK file extension for different purposes, so unless you are sure which format your LCK file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 8 different LCK openers which you will find listed below.

Last updated: January 5, 2022

Suggest another file format using extension LCK

While we know of one file format using the .LCK file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .LCK file.

Various apps that use files with this extension

These apps are known to open certain types of LCK files. Remember, different programs may use LCK files for different purposes, so you may need to try out a few of them to be able to open your specific file.

WinRARWinRARUser submitted
Photo GalleryPhoto GalleryUser submitted
ArchiCADArchiCADUser submitted
Notepad++Notepad++User submitted
Artlantis ApplicationArtlantis ApplicationUser submitted
Any Video Converter FreeAny Video Converter FreeUser submitted
Pegasus MailPegasus MailUser submitted
Exact DentalExact DentalUser submitted
We have not verified any software that we know for certain will work with LCK-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with LCK-files. If you know one, please use the 'Suggest a program' link below and tell us about it!