Fix NS_E_WMP_BURN_DISC_OVERFLOW (0XC00D11D9)

Quick answer for pros

Reduce the total file size below 700 MB for a standard CD-R, or use a DVD-R (4.7 GB) if your drive supports it. WMP won't compress or split files automatically—it's a raw capacity check.

Why this happens

Windows Media Player checks the total size of your burn list against the disc's empty space before it starts writing. The error pops up when your files total more than what the disc can hold—simple as that. Standard audio CDs hold about 80 minutes of audio or 700 MB of data. Data CDs can stretch to 700 MB. If you're mixing audio and data files, WMP counts the raw bytes. The culprit here is almost always a playlist that's too long, not a driver or codec problem. Don't bother checking registry settings or reinstalling WMP—that's a waste of time.

I've seen this on Windows 7, 8.1, and 10 with both WMP 11 and 12. The error code 0XC00D11D9 is consistent across versions. It doesn't matter if you're using MP3, WMA, or WAV—the disc size is the bottleneck.

Step-by-step fixes

1. Check the disc type and size
   Look at the disc you inserted. A CD-R or CD-RW holds up to 700 MB. A DVD-R or DVD+R holds 4.7 GB. If you're using a CD and your files add up to more than 700 MB, you're going to get this error. Open the burn list in WMP and look at the total time or size at the bottom of the playlist pane.
2. Trim your burn list
   Right-click files in the burn list and select Remove from list. You need to get the total under 700 MB (or 80 minutes for audio CDs). WMP recalculates in real-time. Remove the largest files first—a single high-bitrate MP3 can be 10-15 MB.
3. Switch to a DVD
   If your drive supports DVD burning (most do since 2005), eject the CD and put in a DVD-R. WMP will recognize the larger capacity and let you burn more files. You'll need to clear the burn list and re-add files—WMP won't auto-update the disc type.
4. Use a smaller file format
   Convert your audio files to a lower bitrate or use WMA instead of WAV. WAV files are huge (about 50 MB for a 5-minute song). A 128 kbps MP3 is roughly 5 MB for the same song. Use a tool like ffmpeg or iTunes to batch-convert. Then re-add the smaller files to WMP.
5. Burn in batches
   Split your playlist into two CDs. Burn the first set, label the disc, then burn the rest on a second disc. This is the brute-force workaround and it never fails.

Alternative fixes if the main ones fail

• Disable 'Convert to audio CD' option — if you're burning a data disc, WMP might be trying to convert files to audio format, which uses more space. Go to the burn options tab and uncheck 'Convert to audio CD'. Then re-add files.
• Update your burner firmware — rare, but some old drives report incorrect disc capacity. Check the manufacturer's site for a firmware update. Only do this if you've tried everything else.
• Use a different burning tool — ImgBurn or CDBurnerXP are free and handle overflow better. They'll warn you but let you burn anyway (though files at the end will be missing). I've used ImgBurn for years—it's solid.

Prevention tip

Before you start adding files to WMP, check the total size of your folder. Right-click the folder in File Explorer, select Properties, and look at the size. If it's over 700 MB, grab a DVD instead. If you're consistently burning music, buy a spindle of DVD-Rs—they cost pennies each and save you this headache every time.