- The computer processor has been changed.
- The computer motherboard has been changed.
- A basic input/output system (BIOS) setting that affects the computer hardware has been changed. For example, hyperthreading has been disabled.
- The hard disk on which the media content was originally downloaded has been moved from one computer to another computer.
- An application, such as the RegClean utility, changed DRM settings in a way that caused corruption.
- Microsoft Windows has been reinstalled on the computer.
- If Windows Media Player 11 is running, exit Windows Media Player 11.
- Locate the DRM folder on the hard disk, and then rename the DRM folder to DRMbackup.
Note By default, this folder is in the following location in Windows XP:%SystemDrive%\Documents and Settings\All Users\DRMBy default, this folder is in the following location in Windows Vista:%SystemDrive%\ProgramData\Microsoft\Windows\DRM
- Visit the following Microsoft Web site:
- Follow the instructions on the Web site to update the security component of Windows Media Player 11. This procedure enables you to obtain new licenses for media content. You can also reset licenses for purchased content so that you can play that content on a computer.
Note On a Windows Vista-based computer, you must run Internet Explorer as an administrator before you update the security component of Windows Media Player 11. To do this, follow these steps:
- Click Start, and then click All Programs.
- Right-click Internet Explorer, and then click Run as Administrator.
If you are prompted for an administrator password or for confirmation, type your password, or click Continue.