This error typically occurs when the system time is incorrect or when an ODM file for an audiobook was downloaded but not opened in OverDrive's desktop app.
Here's the full error message you may see: "Unable to acquire license to play selected title. The requested license is either invalid or already acquired."
Generally, this error can be resolved by setting your system clock correctly, then downloading the title again:
Make sure your computer's time, date, and time zone settings are correct.
- Windows: Right-click the clock in the lower-right corner of your desktop (on the taskbar), then click Adjust date/time.
- Mac: Click the clock in the upper-right corner, then click Date & Time Preferences.
- Clear your internet browser's temporary files.
Download and open the title you were having trouble with again.
The OverDrive app will open automatically with the newly added audiobook.
If the OverDrive app doesn't automatically open when you download the title, try opening the ODM file (which should show up in your downloads folder).
If you're having trouble opening an ODM file with OverDrive's desktop app, you may need to reset the file association for ODM files. Visit this help article for instructions to set the file association for ODM files on your computer..