thumb Whenever you try to modify a file that you have not touched in over two weeks, you’ll receive the following message:

The file [File Name] is locked because you haven’t made any changes to it recently.

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This happens because the files which have not been changed for 2 weeks (by default) are automatically locked by OS X Lion. This is to prevent accidental auto-save changes from modifying your files.

To modify or disable file locking feature in Mac OS Lion follow the steps.

Step 1 Open the System Preferences from the Apple menu on the top left.

Step 2 Select “Time Machine”.

File Locking Feature-4

Step 3 Click the “Options” button.

File Locking Feature-3

Step 4

a) To disable file locking feature, uncheck the box next to “Lock documents [2 weeks] after last edit”.

b) To change the time interval between file locking, click the drop-down list and choose 1 day, 1 week, 2 weeks, 1 month or 1 year.

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Then click “Save” button.

Now you wouldn’t get the annoying prompt.

Arthur Gareginyan

Arthur Gareginyan

Arthur is a designer and full stack software engineer. He is the founder of His personal website can be found at Check out his free WordPress plugins at

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