.LCK File Extension

Program Lock File

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What is an LCK file?

An LCK file is an access control file used to "lock" a database or other file from being opened or changed by more than one user at a time. It prevents users from accidentally overwriting changes and possible data corruption. LCK files are typically open when the file is not in use and locked when a user is working on the file.

More Information

LCK files may be used by a variety of programs and databases. Some programs that use LCK files include Microsoft FrontPage, Corel Paradox, Adobe Dreamweaver, Autodesk Inventor, Pegasus Mail, and ACT! contact management software.

NOTE: Since lock files are managed by their corresponding applications, they should not be opened manually.

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Programs that open LCK files

Referenced by various applications

Verified by FileInfo.com

The FileInfo.com team has independently researched the Program Lock file format and Windows apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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