windows media player requires dvd decoder to play dvd media. no dvd decoder was found by windows media player. ? windows7///64bit

Hi,

1. Which file format are you trying to play in Windows Media Player?
2. Have to tried playing the file using any other media player?
3. Do you receive any error message/code?

Method 1

Let’s run Windows Media Player DVD troubleshooter that checks for common issues, such as making sure you have both a DVD drive and the correct DVD decoder installed on your computer.

Access the below link for more information on Windows Media Player DVD troubleshooter:
http://windows.microsoft.com/en-US/windows7/Open-the-Windows-Media-Player-DVD-troubleshooter

Method 2

You can update the latest codec from website:

http://windows.microsoft.com/en-US/windows7/Codecs-frequently-asked-questions

THIRD PARTY DISCLAIMER: Using Third Party Software, including hardware drivers can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the use of Third Party Software can be solved. Using Third Party Software is at your own risk.

You can also refer the step mentioned below.

Click Start, click Run, type dvdupgrd /upgrade  and then press ENTER.

After you run the dvdupgrd /upgrade command, you will be directed to the manufacturer's Web site where the upgrade is located. Follow the instructions on the Web site to obtain and install the upgrade for your DVD decoder program.

Hope it helps.