Guide To Error C00D11DA In Windows Media Player

C00D11DA or “Windows Media Player cannot play, synchronize, or burn a protected file because an error occurred while verifying the license.”

  • Open My Computer
  • Goto Tools | Folder Options
  • Click the View Tab
  • Select “Show Hidden Files and Folders”
  • Check “Display Contents of System Folders”
  • Uncheck “Hide Extensions for Known file types”
  • Uncheck Hide Protected Operating Systems Files”
  • Click OK

After that navigate to the following folder based on your Operating System…

Microsoft Windows XP: C:\Documents and Settings\All Users\DRM
Microsoft Windows 2000: C:\Documents and Settings\All Users\DRM
Microsoft Windows 98: C:\Windows\All Users\DRM
Microsoft Windows Millennium Edition (Me): C:\Windows\DRM

  • Rename the DRM folder to DRMBACKUP
  • In the Registry Editor (Start | Run | regedit), delete the following subkey in the registry.  (Backup the Registry first, File | Export – In addition use System Restore to make a new Restore Point in Windows XP)


HKEY_CURRENT_USER\Software\Microsoft\Windows Media\WMSDK\General

  • Reboot your PC
  • You may need to reinstall the software for your music download service and run the installer for Windows Media Player again after this.

NOTE:  If your User Profile is a member of both the Administrators and Guest Groups it is also said to produce this error.  Group membership can be changed in the Computer Management Snap-In under Users and Groups.

The folks at Napster appear to have a DRM Reset Tool that reportadly will help fix up this error also if the above did not help.

NOTE: Use at own risk!  If this in some way screws up “something”, a call to Microsoft Product Support may to needed to fix it.  If nothing above helps, calling Product Support would be the next step anyway, however.

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