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How to Fix Windows Media Player Not Working on Windows

Windows Media Player not playing videos or audio, codec errors, or missing from Windows? Fix media playback issues and codec problems.

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Main Troubleshooting Guide

How to Fix No Audio or Sound →

Complete symptoms, causes, and step-by-step solutions

Symptoms

You might be experiencing this problem if you notice:

  • •"Windows Media Player encountered a problem" error
  • •Video plays but no audio, or audio but no video
  • •"Codec required" or "Unrecognized file type" error
  • •Windows Media Player not installed or missing
  • •Media Player crashes when opening certain files
  • •DVD playback not working

Common Causes

  • ⚠Missing codecs for the media format
  • ⚠Windows Media Player feature not installed
  • ⚠Library database corrupted
  • ⚠DRM (Digital Rights Management) issue
  • ⚠Conflicting media player plugins
  • ⚠Windows N/KN edition missing media features

Solutions

Solution 1: Install Missing Codecs

  1. 1Most codec issues: install HEVC Video Extensions from Microsoft Store
  2. 2For broader format support: Settings > Apps > Optional features
  3. 3Add "Windows Media Player" if not listed
  4. 4Add "Media Feature Pack" for Windows N/KN editions
  5. 5For MKV, FLAC, and other formats: install the free K-Lite Codec Pack
  6. 6After installing codecs, restart and try playing the file again

Solution 2: Reset Windows Media Player

  1. 1Open Command Prompt as Administrator
  2. 2Run: regsvr32 jscript.dll
  3. 3Run: regsvr32 vbscript.dll
  4. 4Close and reopen Windows Media Player
  5. 5If library is corrupted: go to Organize > Manage Libraries
  6. 6Remove all library folders, then re-add them

Solution 3: Use Alternative Media Player

  1. 1Install VLC Media Player (free, plays virtually all formats)
  2. 2VLC includes its own codecs — no separate codec pack needed
  3. 3Right-click a media file > Open with > VLC
  4. 4Check "Always use this app" to set as default
  5. 5VLC also plays DVDs, Blu-rays, and streams
  6. 6For Windows 11: the new "Media Player" app also supports most formats
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