What are LOCK files and how to open them
Are you having problems opening a LOCK 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 LOCK file?
Files that contain the .lock file extension are most commonly associated with Microsoft's .NET Framework. The LOCK file format is used to create "locked" copies of a database file.
When a database is already in use and another user tries to open it, a locked copy of the file will be opened instead of the editable copy. This file is saved with the .lock file suffix. This LOCK file prevents the user from making changes to the file while another user is editing it.
The Adobe Lightroom software application also uses the .lock file extension for locked database files.
How to open LOCK files
Important: Different programs may use files with the LOCK file extension for different purposes, so unless you are sure which format your LOCK file is, you may need to try a few different programs.
While we have not verified the apps ourselves yet, our users have suggested two different LOCK openers which you will find listed below.
Last updated: March 10, 2023
Various apps that use files with this extension
These apps are known to open certain types of LOCK files. Remember, different programs may use LOCK files for different purposes, so you may need to try out a few of them to be able to open your specific file.
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