How to Fix Windows Media Player Error C00D11B1?


Windows Media Player Error C00D11B1. Windows Media Player can’t play the file.

Windows Media Player is a media player developed by Microsoft for playing and organizing video as well as audio files. It comes pre-installed with the Windows operating system.

Even though Windows Media Player offers seamless media playback experience, error messages that pop up when using it annoy the user. Among several error codes thrown by WMP, Windows Media Player Error C00D11B1. Windows Media Player can’t play the file is the tricky one. So, let’s see what are the reasons responsible for this error along with the solutions to fix it.

Causes for Windows Media Player Error C00D11B1:

  1. Missing, corrupt or inadequate codecs
  2. Missing or deleted Windows Media Player associated files
  3. Faulty (corrupt/damaged) Windows Media player software
  4. An improper/incomplete way of installing WMP
  5. Virus attack on system files
  6. Wrongly configuring UDP settings
  7. Inappropriate Proxy settings
  8. Corrupt or damaged registry entries

How to Fix Windows Media Player Error C00D11B1?

Step 1: Install Necessary Codecs

Windows Media Player Error C00D11B1 may arise even if a codec that is required to play the video file is not installed on the computer. When a necessary codec is missing, the system is unable to play Windows Media video file and gives playback errors.

So, to resolve this problem tune Windows Media Player to download the required codecs automatically by following below procedure.

  • In WMP, click Organize, then Options


  • Switch to Player tab, enable Download codecs automatically option and click OK


  • Play the video file. click Install button, if you are asked permission to install the codec

Step 2: Update Drivers

Outdated or broken driver software may often involve in displaying error messages during the playback of files.

So, update your Windows drivers using below steps.

  • Open Control Panel and select Device Manager
  • Select your required device driver and right-click
  • Click Update Driver button (in Windows 10)
  • Update Driver software button (in Windows 8)
  • Properties -> Driver -> Update Drive button (in Windows 7, XP and Vista)

Note: Make sure your computer has internet connectivity to update drivers.

Step 3: Virus Scan the System and Run SFC

At times, virus or malware scripts entered your system through the internet, email attachments, etc. corrupts your system files, personal data along with other installed programs. So, scan your computer using effective antivirus software and then, run Windows SFC using the below guide.

  • Go to Start menu and type cmd
  • Right-click on Command Prompt and select Run as administrator
  • In the Command Prompt window, type sfc /scannow and hit Enter key


Wait for the completion of the process.

Additional Info: Sometimes, corrupt video files also give rise to different error messages when playing in Windows Media Player. So, fix corrupt MP4 files, MOV, M4V, AVI, etc. video files using the suitable video repair tool to minimize the playback issues in WMP.

Step 4: Disable UDP Settings

Sometimes, UDP (User Datagram Protocol) prevents media file from being played in Windows Media Player. So, disabling UDP may help you in solving the Windows Media player error C00D11B1.

How to Disable UDP?

Open Windows Media Player and select Tools.

Select Options and switch to Network tab.

Uncheck (deselect) UDP box under Streaming protocols, click Apply then OK.

Step 5: Correct Proxy Settings

Incorrect Proxy settings may interrupt the normal functionality of your Windows Media Player. So, correct the proxy setting and check Windows Media Player error C00D11B1 is fixed or not.

  • From the Windows Media Player Tools menu, select Options
  • Go to Network tab and select (double-click on) required protocol from the Proxy Settings
  • Select Use browser proxy settings and click OK

Step 6: Reinstall WMP

Open Run window from the Start menu.

Type in appwiz.cpl and hit OK.

Select Windows Media Player from the list of programs, click Uninstall/Remove button and complete the process.

Install Windows Media Player from the scratch.

Step 7: Repair Windows Registry Entries

Repair Windows registry by following a suitable method. It is suggested to do it under the guidance of a system expert since repairing registry is a complex task and incorrect modification results in an additional problem with your computer.