How to Resolve Wmasf.dll Not Found or Missing Errors

Fix the "Wmasf.dll Not Found or Missing" Error - Your Ultimate Solution

Wmasf.dll is a file used by various Microsoft operating systems, including Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000. This file is associated with the Media Feature Pack, and errors with this file could indicate a registry problem, virus or malware issue, hardware failure, or corrupted or missing file. This article explains some of the common error messages you might see and suggests ways to fix them.

How to Resolve Wmasf.dll Not Found or Missing Errors

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Wmasf.dll Errors

There are several ways wmasf .dll errors can show up on your computer. You might see messages like “Wmasf.dll Not Found,” “Cannot find [PATH]\wmasf.dll,” or “Cannot start [APPLICATION]. A required component is missing: wmasf.dll.” These error messages could appear while using or installing certain programs, when Windows starts or shuts down, or even during a Windows installation.

How to Fix Wmasf.dll Errors

Revive your Wmasf.dll: A Step-by-Step Guide to Fix Missing or Not Found Errors

  1. Don’t risk downloading the Wmasf.dll file from shady “DLL download” websites. Instead, get it from a reputable, original source to avoid further problems.
  2. Check the Recycle Bin for the Wmasf.dll file before panicking. You may have unintentionally deleted it.
  3. In case you have emptied the Recycle Bin, download a file recovery program to try to retrieve Wmasf.dll.
  4. If you cannot access Windows due to the error, start it in Safe Mode before taking any of the following steps.
  5. Try using System Restore to undo recent system changes that might have caused the Wmasf.dll error.
  6. Reinstall the program associated with Wmasf to potentially fix the DLL error.
  7. For those experiencing a “MovieMaker.exe” error, reinstall Windows Essentials, the suite containing Movie Maker. Use IObit Uninstaller to eliminate the previous installation and download Windows Essentials using the direct link.
  8. When possible, reinstalling the program providing the Wmasf .dll file can be a highly effective solution to the error.
  9. Run the System File Checker (sfc /scannow) to replace a missing or corrupted Wmasf.dll file.
  10. Conduct a virus/malware scan to determine if a hostile program is masquerading as the Wmasf .dll file or if a virus has damaged the DLL file.
  11. Update drivers for any hardware devices associated with Wmasf.dll.
  12. If updating the driver did not help, revert to a previously installed version.
  13. Install any available Windows updates, as these may replace or update some of the hundreds of Microsoft distributed DLL files.
  14. Test your computer’s memory and hard drive, as these are the most likely components that can cause Wmasf .dll errors as they fail.
  15. If hardware problems persist after a clean Windows installation, they are likely the cause of the Wmasf .dll error. Troubleshoot the hardware accordingly.


Wmasf.dll errors can be caused by a variety of factors, but there are several steps you can take to fix them. By following the steps outlined in this article, you can hopefully resolve the issue and get your system back to working order. Remember to always obtain the file from its original, legitimate source and avoid downloading it from unauthorized sites.

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