Window locking is akin to record locking and is considered the same error when it comes to the Script Debugger (301). Essentially they are the same except that window locking doesn't require the FileMaker solution to be hosted on a server to reek havoc with scripting and manual editing of records. In other words, window locking is record locking in a single-user scenario but only on the same record. It has nothing to do with multiple users.

View the full article