How to fix mfc100.dll error on Windows 10

Ivan Jenic
by Ivan Jenic
Troubleshooting Expert
Passionate about all elements related to Windows and combined with his innate curiosity, Ivan has delved deep into understanding this operating system, with a specialization in drivers and driver troubleshooting. When he's not tackling... Read more
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  • An error message notifying of mfc100.dll missing from your computer might be caused by a virus or malware infection.
  • Running a full system scan should clarify if that is the cause.
  • Also, if the error states that mfc100.dll was not found on Windows 10, it's possible that you sent it to the Recycle Bin.
  • So checking the recently deleted items might help you restore the file and get rid of the issue.
How to fix mfc100.dll error fix in Windows 10

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The mfc100.dll missing error message you get on Windows 10 can be caused by several reasons. And it probably prevents you from logging in to the computer.

The full error message reads: The program can’t start because mfc100.dll is missing from your computer.

In order to fix this problem, you will most likely need to enter Safe Mode on Windows 10 and continue the troubleshooting process from there.

However, there are cases when you are able to boot normally. But the issue still needs to be addressed.

One of the possible reasons for which you can get the error message regarding the mfc100.dll file is that maybe your computer is infected with a virus or malware.

You might have a hardware failure, your Windows 10 registry might be corrupted or perhaps you deleted it by mistake.

We have several options that you can try to get your mfc100.dll file back and get your system to work properly. So, in order to fix this problem, follow the instructions listed below.


How can I fix mfc100.dll missing on Windows 10?

  1. Use a dedicated troubleshooter
  2. Download Microsoft Visual C++ Service Redistributable Package
  3. Check your Recycle Bin
  4. Scan your system for malware
  5. Use System Restore
  6. Reinstall problematic programs
  7. Repair your Registry

1. Use a dedicated troubleshooter

Oftentimes, DLL errors can be hard to troubleshoot especially for non tech-savvy users. And it takes a great deal of time and effort to try and test all methods found online.

Restoro repair

Restoro is a reliable third-party DLL fixer which uses a built-in automated system and an online library full of functional DLLs to replace and repair any files that might be corrupted or damaged on your PC.

All you need to do to resolve your PC’s problems is to launch it, and simply follow the on-screen instructions to start the process, as everything else is covered by the software’s automated processes.

This is how you can fix registry errors using Restoro:

  1. Download and install Restoro.
  2. Launch the software.
  3. Wait for it to scan your PC for any stability issues and possible malware.
  4. Press Start Repair.
  5. Restart your PC for all the changes to take effect.

After this process is completed your PC will be as good as new, and you will no longer have to deal with BSoD errors, slow response times, or other similar issues.

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Disclaimer: This program needs to be upgraded from the free version in order to perform some specific actions.



2. Download the Microsoft Visual C++ Service Redistributable package

Download Microsoft Visual C++ Service Redistributable Package

We need to go and download Microsoft Visual C++ 2010 Service Pack 1 Redistributable Package MFC Security Update and install it.

Make sure to choose the correct version to install depending on the operating system you have. This program will try to replace or repair the mfc100.dll file in the system.


3. Check your Recycle Bin

check recycle bin
  1. If you deleted the mfc100.dll file by mistake then go to Recycle Bin on the desktop.
  2. Restore the mfc100.dll file you deleted.

Want to be prepared to fix any DLL error in Windows 10? Check out this guide!


4. Scan your system for malware

scan your system for malware
  1. Open the antivirus you have on your operating system.
  2. Run a full system scan.
  3. Wait for the process to finish and restart your device.

It is possible that a virus or malware might have damaged your DLL files.

Hopefully, a deep scan will clarify this situation, eliminate the intruder and restore your device’s health.

To prevent such unhappy events in the future, use just the most reliable antivirus solutions, which are also updated frequently with the latest virus signature or zero-day exploit attempts.


5. Use System Restore

  1. Go to Start and type recovery.
  2. Double-click on the first result to open the Recovery settings page.
  3. Select Reset and follow the on-screen instructions to complete the process.
pc recovery options windows 10

If you’re still using Windows 8.1, here’s how to use System Restore:

  1. Move the mouse cursor to the right side of the screen.
  2. After the Charms bar opens up type in the search box Recovery
  3. Click on the Settings bar on the right side of the screen.
  4. Click on the Recovery icon.
  5. From the window that pops up click on Open System Restore.
  6. Choose the Recommended restore you have on the screen by clicking on it.
  7. Click on Next.
  8. Click on Finish.
  9. Wait for the system restore to finish.

System Restore is a great option to go back to a previous version of your system. This way, any files that you might have deleted or misplaced will be restored to a previous working state.


6. Reinstall problematic programs

reinstall all problematic programs to fix mfc100.dll
  1. Reboot the computer.
  2. Uninstall the program you think caused the issue.
  3. Install the program again.
  4. Reboot the computer.

The error with mfc100.dll file might occur when you install a program.

This means that the install process failed and the respective programs haven’t been properly installed on your machine.


7. Repair your Registry

repair your registry

You can also fix .dll issues by repairing your Registry. Fortunately, there are many tools that you can use to quickly fix it.

For more information, check out this list of the best Registry cleaners for your on your Windows computer.

All in all, we hope the solutions posted above will solve your issue with the mfc100.dll file on Windows 10.

We’d like to hear what worked for you so we know how to tackle these tutorials in the future. Tell us in the comments.


  • How do I install a DLL file?

Whatever you do, don’t download the file from an untrusted website as it might be infected with malware. Here’s a complete guide on how to fix a missing DLL file from Windows 10.

  • What is mfc100 DLL missing?
The error message mfc100. dll missing means that either that file is missing or there is a possible system file corruption. To solve this problem, run the System File Checker tool to scan for missing or corrupted files.

Frequently Asked Questions

  • To fix this issue, you will need to try to either scan your system or use a C++ redistributable package. We’ve got more solutions in our complete guide to fix the mfc100u.dll issue.

  • Whatever you do, don’t download the file from an untrusted website as it might be infected with malware. Here’s a complete guide on how to fix a missing DLL file from Windows 10.

  • The error message mfc100. dll missing means that either that file is missing or there is a possible system file corruption. To solve this problem, run the System File Checker tool to scan for missing or corrupted files.

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