Open LCK files

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    Lock Format
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Have you encountered a problem with a LCK file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a LCK file here. In the further part of this page we have added a list of programs that should open your LCK file. It is enough you choose a proper application for your operating system, download and install it.

What is LCK file?

The file extension LCK is used by various programs for so-called Program Lock files. These files are used to restrict access to other files, such as a database, to one user at a time. Usually, this file will be automatically opened with the appropriate protected file, and then it will be locked so that if another user attempts to open the protected file, it will be denied.

More info

Programs that use LCK files include Microsoft SharePoint Designer, Corel Paradox, Pegasus Mail, and Skype.

Of course these files are not compatible with each other and should neither be opened nor moved from their directory or deleted.

Programs which can open a LCK file

How to open file with LCK extension?

In order to open a file with LCK extension one of the following programs must be installed on user’s system. If a problem with opening LCK file occurred, it is highly possible that none of the listed programs is present on user’s system. Even if one or more said programs are installed, there may be issues related with given programs. In order to solve a problem with LCK files, follow the instructions below.
Install Referenced by various applications or other program from the list

Most often resolving problems with opening LCK files is very simple. Just install an appropriate program that supports such files. All of the listed programs support LCK files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of LCK files or offer file conversion options, but may not be capable of editing such files.

Set Referenced by various applications as the default program for opening LCK files

It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate LCK files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Referenced by various applications applications is not on the list, select "Browse" option in order to manually locate the directory where Referenced by various applications has been installed.


Check the section that lists most common problems with LCK files

Sometimes problems with opening LCK files may not lie with the application itself, but can arise due to other causes, such as:

  • File data is corrupted
  • LCK files has been not been completely download from the internet (only a part of the data has been downloaded)
  • Currently used user account hasn’t been granted necessary privileges to open LCK files (should that be the case, please contact your system administrator or IT specialist)
  • LCK file was being copied from a corrupted storage device and is incomplete or data is corrupted. (Copying files from unknown or untrusted sources should be conducted with great care as such files may contain malicious software, which can damage your system)

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