How to Fix Mpr.dll Not Found or Missing Errors

If using System Restore doesn't fix the error, reinstall the program or driver that relies on the mpr.dll file

By
Tim Fisher
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Tim Fisher
Senior Vice President & Group General Manager, Tech & Sustainability
  • Emporia State University
Tim Fisher has more than 30 years' of professional technology experience. He's been writing about tech for more than two decades and serves as the SVP and General Manager of Lifewire.
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Updated on January 10, 2023

Mpr.dll errors are caused by situations that lead to the removal or corruption of the mpr DLL file.

In some cases, mpr.dll errors could indicate a registry problem, a virus or malware issue, or even a hardware failure.

MPR stands for Multiple Provider Router. You can read more about it in this Microsoft article on MPR.

The mpr.dll error message could apply to any program or system that might utilize the file on any of Microsoft's operating systems, including Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000.

Mpr.dll Errors

Mpr dll error message in Windows

There are several ways mpr.dll errors can show up on your computer. Here are some of the more common error messages you might see:

  • Mpr.dll Not Found
  • This application failed to start because mpr.dll was not found. Re-installing the application may fix this problem.
  • Cannot find [PATH]\mpr.dll
  • The file mpr.dll is missing.
  • Cannot start [APPLICATION]. A required component is missing: mpr.dll. Please install [APPLICATION] again.

These error messages might appear while using or installing certain programs, when Windows starts or shuts down, or maybe even during a Windows installation. The context of the error is an important piece of information that will be helpful while solving the problem.

How to Fix Mpr.dll Errors

Follow these steps in the order they're given below to try the simpler solutions first.

Do not download mpr.dll from a "DLL download" website. There are many reasons why downloading a DLL file like that is a bad idea. If you need a copy of this file, it's best to obtain it from its original, legitimate source.

  1. Restore mpr.dll from the Recycle Bin. The easiest possible cause of a "missing" mpr.dll file is that you've mistakenly deleted it.

    If you suspect this, but you've already emptied the Recycle Bin, you may be able to recover the file with a free file recovery program.

    Start Windows in Safe Mode to complete any of these steps if you're unable to access Windows normally due to the error.

  2. Run a virus/malware scan of your entire system. Some mpr.dll errors could be related to a virus or other malware infection on your computer that has damaged the DLL file. It's even possible that the mpr.dll error you're seeing is related to a hostile program that's masquerading as the file.

  3. Use System Restore to undo recent system changes. If you suspect that the mpr.dll error was caused by a change made to an important file or configuration, System Restore could solve the problem.

  4. Reinstall the program that uses the mpr.dll file. If the DLL error occurs when you use a particular program, reinstalling the program should replace the file.

    Try your best to complete this step. Reinstalling the program that provides the mpr.dll file, if possible, is a likely solution to this error.

  5. Update the drivers for hardware devices that might be related to mpr.dll. If, for example, you're receiving a "The file mpr.dll is missing" error when you use software that relies on an active internet connection, try updating the drivers for your network card.

  6. Roll back a driver to a previously installed version if mpr.dll errors began after updating a particular hardware device's driver.

  7. Run the sfc /scannow System File Checker command to replace a missing or corrupt copy of the mpr.dll file. If this DLL file is provided by Microsoft, the System File Checker tool should restore it.

  8. Install any available Windows updates. Many service packs and other patches replace or update some of the hundreds of Microsoft distributed DLL files on your computer. The mpr.dll file could be included in one of those updates.

  9. Test your memory and then test your hard drive. I've left the majority of hardware troubleshooting to the last step, but your computer's memory and hard drive are easy to test and are the most likely components that might cause mpr.dll errors as they fail.

    If the hardware fails any of your tests, replace the memory or replace the hard drive as soon as possible.

  10. Repair your installation of Windows. If the individual mpr.dll file troubleshooting advice above is unsuccessful, performing a startup repair or repair installation should restore all Windows DLL files to their working versions.

  11. Use a free registry cleaner to repair mpr.dll related issues in the registry. A free registry cleaner program may be able to help by removing invalid mpr.dll registry entries that might be causing the DLL error.

    We rarely recommend the use of registry cleaners (see why in our Registry Cleaners FAQ). They're included here as a "last resort" attempt before the destructive step coming up next.

  12. Perform a clean installation of Windows. This will erase everything from the hard drive and install a fresh copy of Windows. If none of the steps above correct the mpr.dll error, this should be your next course of action.

    All the information on your hard drive will be erased during this step. Make sure you've made the best attempt possible to fix the mpr.dll error using a troubleshooting step prior to this one.

  13. Troubleshoot for a hardware problem if any mpr.dll errors persist. After a clean installation of Windows, your DLL problem can only be hardware related.

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