WMA Tracks don't play or triggers a crash due to DRM issues
Updated by Russell Samuels on May 22, 2014

If WMA Playback failures occur after you've verified that the Windows Media
Subsystem is correctly installed (as described at:
or if you receive an error:
'...Some of the tracks are protected by Digital Rights Management...' or
'ModName: Indiv02.key or Indiv02_64.key' then it is probably due to to the
fact that the tracks are protected by Digital Rights Management (DRM) and:
o you do not have rights to play them, the rights may have expired
o there is a problem with the DRM certificates on your system (e.g. if you copied
DRMed WMA files to a new machine) or if the Windows DRM Cache has been
corrupted by an application that modifies the cache.

Some solutions that have worked for some users include:

a) If you use the Netflix movie player (, try to run:
C:\Program Files\Netflix\Netflix Movie Viewer\ResetDRM.exe

b) Delete the whole DRM folder under C:\ProgramData\Microsoft\Windows\DRM\Cache as follows:
1. Kill all instances of Internet Explorer using Task Manager
2. Rename the DRM directory at C:\ProgramData\Microsoft\Windows\DRM
3. Run IE as administrator
4. Run DRM Upgrade at

Note: other locations for the DRM directory are might be:
* Windows Vista: C:\ProgramData\Microsoft\Windows\DRM
* Microsoft Windows 2000 and Windows XP: C:\Documents and Settings\All Users\DRM
* Windows 98: C:\Windows\All Users\DRM
* Windows Millennium Edition: C:\Windows\DRM

More information about this approach appears at:

c) Revert the DRM Cache to an earlier uncorrupted version:
1. Navigate with Windows Explorer to C:\ProgramData\Microsoft\Windows\DRM\
2. Right clicked the Cache folder -> Properties -> previous versions
3. Revert to a previous version of the folder before the error started to happen.

If this fails, contact the store from which you originally purchased the DRMed content.

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