Fix NS_E_WMP_DRM_ACQUIRING_LICENSE (0XC00D1202)

Quick Answer

Sync your system time to the internet or reset DRM files via Command Prompt as admin: regsvr32 %windir%\system32\drm\drmupgds.dll then regsvr32 %windir%\system32\drm\drmv2clt.dll.

Why This Happens

This error means Windows Media Player couldn't download a license for a protected file—usually a purchased song or video from old services like MSN Music, Zune, or some Groove Music. The license server checks your system time, and if it's off by more than a few minutes, it says no. I've seen this a lot on laptops with dead CMOS batteries—their time resets to 2005 and WMP chokes. Had a client last month whose entire print queue died because of this same time issue; their DRM licenses were hosed too. Also can happen if your internet is flaky or the license server is dead (old services).

Fix Steps

Check system time. Right-click clock > Adjust date/time > turn on "Set time automatically" and "Set time zone automatically." Sync now. If it's off, fix it.
Reset DRM files. Run Command Prompt as administrator (right-click Start > Command Prompt (Admin)). Type these two commands, one at a time, hitting Enter after each:
```
regsvr32 %windir%\system32\drm\drmupgds.dll
regsvr32 %windir%\system32\drm\drmv2clt.dll
```
Restart WMP after that.
Clear DRM cache. Open File Explorer, go to %userprofile%\AppData\Local\Microsoft\DRM. Delete everything in that folder. WMP will rebuild it next time.
Re-acquire license. Open WMP, go to Library, right-click the protected file, choose "Update license" or try playing it. If it asks for license info, click Renew or Retry.

If That Doesn't Work

Try these alternatives:

Run the Windows Media Player DRM troubleshoot tool. Get it from Microsoft (it's buried, but search "WMP DRM troubleshooter" in Settings > Update & Security > Troubleshoot > Additional troubleshooters).
Reset WMP settings. Open WMP, press Alt to show menus, Tools > Options > Player tab > check "Automatic updates" and under "Player" uncheck "Add files to library automatically" (then re-check later). Not a guaranteed fix but worth a shot.
Use a different player. If the file is no longer supported (old store like Zune), download a DRM-stripping tool or convert it with Audacity (but that's a gray area—honestly, it's your legit purchase). VLC often plays DRM-free versions.

Prevention Tips

Keep your system clock synced to time.windows.com. Check your CMOS battery if you see time drift. Also, for new music, buy from stores that don't use DRM—like Bandcamp or Amazon MP3. DRM is a pain and services die. Had a client lose a whole library from the MSN Music store. Don't rely on it.