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The message “The iTunes Library.itl file is locked, on a locked disk, or you do not have write permission for this file.” is a message you’ll receive when you start iTunes and the iTunes library is already used by one of CopyTrans programs:
iTunes Library .itl file is locked on a locked disk or you do not have write permission for this file

Why is it so?

As soon as any CopyTrans app is started, it prevents iTunes from starting. This is done deliberately to prevent accidental synchronization of your device (iPod, iPhone, iPod Touch, iPad) with an empty iTunes library.

How to fix it?

To open your iTunes library, simply close the running CopyTrans application.

If you did the above but iTunes still reports the library as being locked, please reboot your computer or kill CopyTrans apps from the Task Manager. This will make sure that all programs are closed.

YouTube Tutorial: iTunes Library is locked

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By carina

Carina is part of team CopyTrans since 2008 and is always happy to share her passion for web marketing, graphic design & social media. With coffee running through her veins, she enthusiastically dives each day into the depths of the Internet searching for new cool stuff to be shared with you and her team.