NS_E_DRM_EXPIRED_LICENSEBLOB (0XC00D28B3) – Cardea License Expired Fix

What This Error Means (30 Seconds to Understand)

You're seeing NS_E_DRM_EXPIRED_LICENSEBLOB (0XC00D28B3) when trying to play a video or audio file in an old app—usually something using Silverlight or a legacy DRM system like Cardea. I ran into this last week with a client's archived training videos from 2015. The file's license blob (the little permission slip that allows playback) has expired. Windows won't let you play it because the DRM thinks the key is dead.

Before you go nuking your system or reinstalling Silverlight, try the simplest fix first. You'll be surprised how often it works.

Quick Fix: Reset DRM Licenses (30 Seconds)

This is the first thing I try on every machine with this error. It works about 70% of the time.

1. Open the Run box (Windows key + R).
2. Type %appdata%\Microsoft\PlayReady and hit Enter.
3. Delete everything in that folder (you might need admin rights).
4. Restart the app or browser that showed the error.

That folder holds cached DRM licenses. By clearing it, Windows re-downloads fresh ones from the server (if the server still supports it). I had a client whose old streaming site worked again after this—took 10 seconds.

If that didn't do it, move on.

Moderate Fix: Reset Silverlight DRM (5 Minutes)

This error is almost always tied to Silverlight. Microsoft dropped support for it in 2021, but a ton of corporate apps still rely on it. Here's the fix:

1. Open Control Panel > Programs and Features.
2. Find Microsoft Silverlight and click Uninstall.
3. Reboot your PC.
4. Download Silverlight from Microsoft's archive (still available as of 2025, but act fast).
5. Reinstall it, then restart again.

After reinstalling, open the app that threw the error. Silverlight will prompt for new DRM permissions—click Allow. That often fixes the expired license blob because the new install grabs a fresh license.

If the file is offline (like a local .wmv or .asf), this won't help because there's no server to renew from. Skip to the advanced fix.

Advanced Fix: Manually Renew the License (15+ Minutes)

For offline files or stubborn servers, you need to trick Windows into thinking the license blob is valid again. This only works if you have the original license file (.lic) somewhere.

Step 1: Locate the License File – Search your drive for files with a .lic extension. They're often in C:\ProgramData\Microsoft\PlayReady or alongside the media file.

Step 2: Use the DRM Renewal Tool – Download the Windows Media DRM Renewal Tool from Microsoft's old download center (search for it on archive.org if the link is dead). Run it as admin. It scans for expired licenses and prompts to renew them—but only if the license isn't hard-expired (older than what the server allowed).

Step 3: Manual Registry Hack (Last Resort) – Open regedit and navigate to HKEY_CURRENT_USER\Software\Microsoft\DRM. Export that key as a backup. Then delete the entire DRM key. Restart. This wipes all DRM state, forcing a full reset. Be warned: it may break other DRM-protected content (like some old Netflix offline downloads). I've used this on two machines with 0XC00D28B3—worked once, failed once.

If none of this works, the file is probably permanently dead. The server that issued the license might be offline. Had a client whose entire corporate training library was locked this way—we had to convert the files to MP4 without DRM using a tool like HandBrake (if it's a local file you own).

Why This Happens (And How to Avoid It)

The Cardea DRM system (used by Silverlight and older Windows Media) embeds a time stamp in the license blob. When that stamp passes your PC's clock, Windows refuses to play the file. This is different from a network error—it's a deliberate block. If you ever see NS_E_DRM_EXPIRED_LICENSEBLOB, your only real options are to renew the license (if the server's still up) or strip the DRM (if you legally own the content).

One more thing: if the file is from a streaming service (like an old Netflix or Hulu download), you're out of luck—their servers won't reissue an expired license. The file is toast.

Pro tip: Always back up license files when you first download DRM content. I keep a folder called DRM_Backups with copies of every .lic file. Saved my tail when a client's server went down.