Error: Cannot play this DVD because a compatible DVD decoder is not installed.

If the error Cannot play this DVD because a compatible DVD decoder is not installed appears, reinstall the bundled DVD player software.

NOTES:

• A VAIO® computer upgraded to the Microsoft® Windows® XP operating system may no longer be able to play DVD movies because Microsoft does not include a DVD decoder with the operating system.
• For some models, DVD player updates may be necessary to resolve the issue. Downloads are posted on your model support page.