How to fix Windows Media Player c00d11b1

Windows Media Player DRM c00d11b1 A user on our Facebook page asked how to fix the Windows Media Player error c00d11b1 “Windows Media Player can’t play the file”. There is an easy solution to make Windows Media Player play your files again. Here’s how.



This error usually occurs when DRM licenses are corrupt or something is broken. To fix the error all you have to do is to delete your Windows Media Player DRM licenses and recreate them.

Solution 1: Delete DRM Licenses & Cache

What we are going to do is now to delete all DRM Licenses.

Important: To avoid losing licenses, please create a backup before deleting the files

1. Step Follow this tutorial to Unhide all hidden files

2. Step Verify that you can see hidden files

3. Step Open a Windows Explorer (Windows key + E) and then go to C:\ProgramData\Microsoft\Windows\DRM\ (can’t see the folder? Repeat step 1-2, the folder is hidden!)

4. Step Delete all files in the folder.

5. Step Open the subfolder Cache and delete all files in there as well.

6. Step Let Windows Media Player download your licenses again.

7. Step Play your Windows Media Player files again

Solution 2: Security Component Upgrade Fix

This guide might be a bit older, but it still might help some to solve some problems:
Upgrade Windows Media Player Security Componennt

Solution 3: Install Codecs

Download and install this codec package: Vista Codec Package (It’s a codec package for Vista, but it should also work on Windows 7).

If you are on Windows XP, then download and install this codec pack: XP Codec Pack

Sometimes, there might be a codec issue that is causing the error and might not allow you to play any files in Windows Media Player.

Solution 4: Disable Firewall Temporarily

There can be a problem that your firewall is blocking the Windows Media Player streaming. If so, you should temporarily disable your firewall to see if that is causing any problems. Firewalls often block important ports that are required in order to run some programs.

Did this solve your problem? Do you still get the error message c00d11b1 “Windows Media Player can’t play the file”? Let us know!

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- Cheers!


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Oliver is the founder and lead editor of this site. He is interested in finding new ways to break Windows, find common errors and help others to fix them. Aside from that, he loves to fully customize systems with Rainmeter and Dreamscene, find out more about ancient civilizations like the Chachapoya, sharpen his digital photography skills and create software with a small group of selected developers. If you would like to connect with him to discuss anything, send him a mail!

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4 Responses to How to fix Windows Media Player c00d11b1

  1. Orange Community Approved Comment:
    Kyle said:

    There is another possible solution, DivX codec pack interferes with the codec for .avi running in other players, I solved this issue after much research by simply uninstalling DivX

  2. Orange Community Approved Comment:
    Meli said:

    i fixed my problem by going to manage audio devices and was advised that audio enhancements were causing problem….diabled them and now everything is working perfect….

  3. Orange Community Approved Comment:
    Bruno said:

    Hi all…
    I tried everything you guys said…
    I tried everything in this page and everything in this one:

    http://windows7themes.net/windows-media-player-security-component-upgrade-drm.html

    i tried all the steps in both pages and i could do all of them but i still have the problem.

    Does anyone have the time and the pacience to help me or try to with something else or…i just don´t know, i already spent 10 hours trying and trying… but isn´t working…

    Thank you

  4. Orange Community Approved Comment:
    Peter Denis said:

    Hi, I am running Windows XP and use the Windows Media Player 11 for playing my videos. I installed an Optimization package and did run some Microsoft updates. But now I suddenly find out that WMP11 does not play my MP4-videos anymore (and am not able to restore to previous situation). All other formats like wmv, avi and mpg still work. I only get the error message for mp4.
    I can still play them using other players but I prefer WMP11 as it is much quicker.
    Any suggestions where to find a solution for this problem?

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