Notes about the LOCK file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The LOCK file type is primarily associated with '.NET Framework' by Microsoft Corporation. This file format is associated with the .NET feature that creates databases of the form _MSL.DB. The .LOCK file indicates a database is in use and prevents other applications from changing it. If the .LOCK file persists on a system the using application is likely not correctly handling the database.