Error message “Windows Media player version xx.x.x.xxxx expected, but version yy.y.y.yyyy is present”
On Windows Vista:
- Reboot your system.
- Click on Start > All Programs > Accessories.
- Right click on Command Prompt and choose Run as administrator.
- Type unregmp2.exe /UpdateWMPVersion and press Enter.
On Windows XP and Windows 2003 and earlier:
- Reboot your system.
- Click on Start > Run
- Type %SystemRoot%\inf\unregmp2.exe /UpdateWMP and click Ok.

