Fix NS_E_WMP_IMAPI2_ERASE_DEVICE_BUSY (0XC00D11E1) in Windows Media Player

Quick answer

Close any program that's accessing the disc—Windows Explorer, Nero, Roxio, or even a background burning app. If that doesn't work, restart the IMAPI CD-Burning COM Service.

Why this happens

You're trying to erase a rewritable CD or DVD in Windows Media Player, and it throws NS_E_WMP_IMAPI2_ERASE_DEVICE_BUSY (0XC00D11E1). This is Windows Media Player's way of saying "the disc drive won't let me touch it." That usually means something else has a lock on the drive. Could be Windows Explorer showing the disc's contents, a burning suite like Nero or Roxio sitting in the background, or even an auto-play dialog that's still open. I saw this just last month on a client's Dell OptiPlex—they had File Explorer open to the DVD drive, and Media Player couldn't get exclusive access. Close that, and it worked instantly.

How to fix it

1. Close any program that might be using the disc drive. Check Windows Explorer (File Explorer)—if you see the disc listed there, right-click it and choose Eject, then close Explorer entirely. Also close Media Player itself.
2. Check system tray (notification area) for burning apps. Look for Roxio, Nero, or any other CD/DVD burning software. Right-click their icons and select Exit or Close.
3. End background processes. Press Ctrl+Shift+Esc to open Task Manager. Look for processes like IMAPI.exe, Nero.exe, roxiosb.exe, or stsvc.exe. Select them and click End Task.
4. Restart the IMAPI service. Press Win+R, type services.msc, and hit Enter. Find IMAPI CD-Burning COM Service, right-click it, and choose Restart. If it's not running, start it.
5. Try erasing the disc again. Open Windows Media Player, go to the Burn tab, and click Erase this disc. Should work now.

Alternative fixes if the main ones fail

• Use a third-party tool. Grab a free utility like CDBurnerXP or ImgBurn. These often handle drive locks better. Open it, select Erase Disc, and let it do the job. I've had clients where Windows Media Player just wouldn't cooperate, but ImgBurn wiped the disc in 30 seconds.
• Run the hardware troubleshooter. In Windows 10/11, go to Settings > Update & Security > Troubleshoot > Additional troubleshooters > Hardware and Devices. Run it. It rarely fixes this specific error, but it's worth a shot if you're stuck.
• Update or reinstall the DVD drive driver. Open Device Manager (right-click Start > Device Manager). Expand DVD/CD-ROM drives, right-click your drive, select Update driver > Search automatically. If that doesn't help, right-click again and choose Uninstall device, then restart the PC. Windows will reinstall the driver on boot.
• Check for malware or rogue processes. Some malware can lock optical drives. Run a full scan with Windows Defender or your preferred antivirus.

Prevention tips

• Always close File Explorer before you try to erase or burn a disc. That's the most common trigger.
• Don't leave burning software running in the background. If you use Nero or Roxio, set them to not start automatically with Windows.
• Eject and reinsert the disc if you get the error again—that clears any stale locks on the drive.
• Use the Windows built-in tool for erasing: right-click the disc in File Explorer and select "Erase this disc." It uses the same IMAPI service but sometimes bypasses Media Player's flaky lock detection.

That's it. No magic, no voodoo. Just close the apps holding your disc hostage, and you'll be erasing in no time. If nothing works, the disc might be physically worn out—try a fresh rewritable disc. I've seen drives refuse to erase discs that had been overwritten 20 times.