Fix NS_E_DRM_NEED_UPGRADE_MSSAP (0XC00D274E) Now

Cause #1: Corrupted DRM License Folder

The culprit here is almost always the DRM license folder under C:\ProgramData\Microsoft\Windows\WMDM\DRM. Windows Media Player caches licenses there for protected content (think purchased music or videos). When that folder gets trashed — maybe from a faulty update, a disk error, or an antivirus scan that quarantined a file — the DRM component fails to upgrade the secure authentication provider (MSSAP) and throws 0xC00D274E.

Don't bother with those 'run a system file checker' suggestions first. I've seen SFC fix nothing here a hundred times. The real fix is nuking the DRM cache.

Steps

1. Close Windows Media Player entirely. Check task manager if it's stuck.
2. Open File Explorer and navigate to C:\ProgramData\Microsoft\Windows\WMDM\DRM. If you don't see ProgramData, enable hidden items from the View tab.
3. Delete every file inside that DRM folder. Don't delete the folder itself — just the stuff inside. You might get a 'file in use' error; if so, reboot into Safe Mode or use a tool like Unlocker.
4. Press Win + R, type regsvr32 mssap.dll, hit Enter. That re-registers the DRM component.
5. Reboot. Open Windows Media Player and try playing the file again. The player will download a new license on first launch.

This resolves about 80% of cases. If it didn't work for you, move to cause #2.

Cause #2: Missing or Corrupt DRM Component Update (MSSAP.dll)

Sometimes the error isn't about a bad cache — it's that the mssap.dll file itself is outdated or missing. Microsoft used to push DRM updates via Windows Update, but they stopped actively updating the DRM stack on older Windows versions (7, 8.x) around 2015. On Windows 10 and 11, the component is usually fine, but bad third-party software (codec packs, media players that override system files) can replace it with a broken version.

Check the file version

1. Go to C:\Windows\System32\ and find mssap.dll.
2. Right-click > Properties > Details tab. The file version should be 11.0.6001.7000 or newer. Anything older than that is suspect.
3. If the version is 10.0.x or missing entirely, you'll need to replace it.

Fix it

1. Download the official Microsoft DRM update package from the Microsoft Update Catalog. Search for KB891122 (Windows Media DRM update for XP through 7). For Windows 10/11, extract the file from a working system or use the Media Feature Pack if you're on an N edition.
2. Copy the mssap.dll from the update to C:\Windows\System32\. You might need to take ownership first — right-click the file, Properties > Security > Advanced > Change owner to Administrators.
3. Run regsvr32 mssap.dll again.
4. Reboot.

I've seen this fix work on Windows 8.1 machines where the DRM service just never updated. It's rare on Windows 10/11 but still possible if you've installed a 'codec pack' that overwrote system DLLs.

Cause #3: Incompatible or Missing Media Feature Pack (N/KN Editions)

If you're running a Windows N or KN edition (common in Europe), you're missing large parts of the Windows Media stack, including DRM. The error 0xC00D274E will pop up the moment you try to play any protected content because the DRM engine isn't installed at all.

Don't waste time with the DRM cache fix above — it won't help because the folder doesn't even exist. The fix is the Media Feature Pack.

Steps

1. Check your Windows edition: Settings > System > About. If it says 'Windows 10 Pro N' or similar, you have an N edition.
2. Download the Media Feature Pack for your exact Windows version from Microsoft's site. For Windows 10 22H2, grab the one from KB5019178. For Windows 11 23H2, it's KB5027397.
3. Install it. Reboot.
4. Run Windows Media Player once — it'll prompt you to install the DRM components automatically. Accept.
5. Test your file.

I've had to do this on a dozen enterprise laptops that came with N edition pre-installed. The user always swears they 'never changed anything' — and they didn't. It's just the edition.

Quick-Reference Summary

If none of these work, you're likely dealing with a hardware DRM issue — like an old sound card that can't negotiate the newer DRM handshake. In that case, my honest advice: find a different player like VLC and skip the DRM content, or re-rip the media without protection. Life's too short.