Have you ever encountered the “mfc42.dll is missing” or “mfc42.dll not found” error on your PC? If so, you come to the right place. Here, MiniTool Partition Wizard will show you why mfc42dll errors occur and how to fix them.

About Mfc42.Dll Not Found or Missing Error

Do you know what the mfc42.dll file is? It is a base file of the Microsoft Foundation Class Library (which is a C++ object-oriented library for developing desktop applications for Windows).

However, it is easy for any Windows system to encounter the mfc42.dll error. Here are some of the most common situations:

  • You have removed the mfc42.dll file by accident.
  • The mfc42.dll file on your PC is corrupted.
  • There are some registry problems on your PC.
  • There are some viruses or malware on your PC.
  • There is something wrong with your hardware.
  • The Windows system on your PC is outdated.

Different computer configurations may cause different mfc42dll errors to occur. So, when you encounter the mfc42dll error on your PC, you can see error messages like:

  • Mfc42.dll not found.
  • This application failed to start because mfc42.dll was not found. Re-installing the application may fix this problem.
  • Cannot find [PATH]\mfc42.dll.
  • The file mfc42.dll is missing.
  • Cannot start [APPLICATION]. A required component is missing: mfc42.dll. Please install [APPLICATION] again.
  • Faulting module mfc42.dll.

After knowing the basic information about the mfc42dll error, you may want to know how to fix the mfc42.dll not found or missing error as soon as possible. Here are some potential methods. You can have a try.

Method 1. Restore mfc42.dll

If you have deleted mfc42.dll from your PC by accident, you can try recovering it from the Recycle Bin. To do that, you can follow these steps:

  1. Double-click the Recycle Bin icon on your desktop.
  2. In the Recycle Bin window, scroll down to find the mfc42.dll file from the list.
  3. Next, right-click it and select Restore.
  4. Once done, you can recover the file successfully, and then check if the error is fixed.

If you have already emptied your Recycle Bin, you can use a third-party tool to recover the deleted files. Here, I recommend MiniTool Partition Wizard for you. Here are the detailed steps:

Step 1. Download and install MiniTool Partition Wizard on your PC, and then launch it.

MiniTool Partition Wizard DemoClick to Download100%Clean & Safe

Step 2. Select Data Recovery, move your cursor to Recycle Bin and click the Scan button.

click Scan to start scanning deleted files

Step 3. After the scanning is done, click Find and then type “mfc42” in the search box. Then click Find.

use Find feature to search for the file you want to recover

Step 4. Check the file from the search result and click Save. Next, select a directory to save files to and click OK.

select the file you want to recover and click Save

Method 2. Update Windows and Graphics Drivers

Outdated Windows and graphics drivers can occasionally cause mfc42dll errors, too. So, if the Windows on your PC is outdated, you can try updating it to the latest version to fix this error.

To do that, you need to go to Settings > Update & Security and click the Check for updates button. If there are any available updates, just click on Download and Install immediately. Once done, restart your PC and check if the error is fixed.

To update graphics drivers, you can follow this guide:

  1. Press the Windows and R keys at the same time to open the Run window.
  2. Then type “devmgmt.msc” in the box and press the Enter key.
  3. Expand the Display adapters category in the newly opened window.
  4. Right-click the Nvidia driver and then select Update driver from the menu.
  5. Next, click on Search automatically for drivers in the following window.
  6. After that, Windows will automatically locate and install the most recent drivers from the Internet.
  7. Once done, reboot your computer and check if the error is fixed.

select Search automatically for drivers

Method 3. Run a Virus/Malware Scan

If there are any viruses or malware on your PC, you may also encounter the “mfc42.dll is missing” or “Mfc.dll not found” error. In this situation, you can run a virus or malware scan to fix this error. Here’s the way:

  1. Open the Settings window on your PC.
  2. Go to Update & Security > Windows Security.
  3. Select the Virus & threat protection option in the right panel.
  4. Click the Scan options in the new window.
  5. Select a scan method you like from Quick scan, Full scan, Custom scan, or Microsoft Defender Offline scan. Then click Scan now.
  6. Once done, check if the error is fixed.

click the Scan now button to start the virus scanning

Method 4. Roll Back the Driver

You can try rolling back the driver to fix the error if you encounter the “mfc42.dll is missing” or “mfc42.dll not found” error after you update some of your drivers. Here’s the guide:

  1. Open the Device Manager
  2. Expand the category, which includes the driver you have updated before.
  3. Right-click the driver and select Properties.
  4. Go to the Driver tab, and then click the Roll Back Driver
  5. Once done, click OK. Then check if the error is fixed.

Method 5. Run the SFC

You can try running the SFC command to scan and fix the “mfc42.dll is missing” and “mfc42.dll not found” errors, because the sfc /scannow command can check all the critical Windows files and replace any of the problematic files. Here are the detailed steps to run it:

  1. Open the Command Prompt as administrator.
  2. Type “sfc /scannow” and press Enter.
  3. Wait for the process to be completed.
  4. Once done, restart your PC and check if the error has been resolved.

Method 6. Use Windows Memory Diagnostic to Do a Memory Check

As the memory issue can also cause the “mfc42.dll is missing” and “mfc42.dll not found” errors, you can try running the Windows Memory Diagnostic tool to fix this error. Follow these steps to accomplish this operation:

  1. Open the Run window.
  2. Enter “mdsched.exe” into the box and press the Enter key.
  3. A window will pop up. You can choose the first option Restart now and check for problems (recommended).

select the first option

You’d better replace the memory module if your hardware fails this test. To do that, you can refer to this post: How To Upgrade Or Replace The RAM On Your Computer

Method 7. Check the Disk on Your PC

If there are some issues with your storage device, you may also encounter the mfc42dll error. To fix that, you can run CHKDSK. Here’re the detailed steps:

  1. Press the Window and S keys simultaneously to open the Search window, and then type “cmd” in the search box.
  2. Next, you can see Command Prompt under Best Match.
  3. Choose Run as administrator from the right panel.
  4. Type the command “chkdsk /f c:” and press the Enter key.
  5. After that, you can see a sentence that asks if you’d like to check this volume next time the system restarts. Then you just need to type Y and press the Enter key.
  6. Once done, restart your PC after closing Command Prompt.

type the command and Y

If your hard drive fails the test, you’d better replace the hard drive as soon as possible. Before doing that, you can clone all your data via MiniTool Partition Wizard to the new hard drive first, or you may lose your data. Here’s how to do it:

MiniTool Partition Wizard DemoClick to Download100%Clean & Safe

Part 1. Create a Bootable USB Drive

  1. Install MiniTool Partition Wizard on your PC. Connect your USB drive to this computer, and then launch MiniTool Partition Wizard.
  2. Click the Bootable Media feature on the top, and then click WinPE-based media with MiniTool plug-in.
  3. Select USB Flash Disk and click Yes in the pop-up window. Once done, you can create the bootable USB drive successfully.

Part 2. Clone Data to the New Hard Drive

Step 1. Connect the created bootable media to your computer and then boot the device from it.

Step 2. Then follow the on-screen instructions to launch MiniTool Partition Wizard.

Step 3. Next, connect an external hard drive to your computer and select Copy Disk Wizard from the left panel.

select Copy Disk Wizard optionselect Copy Disk Wizard option

Step 4. Then you will go to the Select Disk to Copy window. Select system disk and then click Next.

select the disk you want to copy

Step 5. Next, select the destination disk (Disk 2) and click the Next button. In the prompted window, click Yes if there are no important data on it.

select the destination disk

Step 6. Select copy options based on your needs and click Next. Click the Finish button on the next window.

select your copy option and click Next

Step 7. Click Apply and Yes to execute your changes.

Method 8.  Perform System Restore

Changing an important file or configuration may also cause the “mfc42.dll is missing” or “mfc42.dll not found” error on your PC. In this case, you can perform a system restore to undo the changes you’ve made. Here’s the way:

  1. Open the Settings
  2. Go to System > About, and then select the System protection link on the right panel.
  3. In the new window, click the System Restore
  4. Select Next, and then select the restore point you want to use from the list.
  5. After that, click the Next
  6. Next, click Finish. Then choose Yes to the “Once started, System Restore cannot be interrupted. Do you want to continue?” question.
  7. Then the System Restore process will begin. Wait for this process to be completed.
  8. Once done, your Windows will revert to the previous state as you select.

Method 9. Reinstall the Program that Uses the Mfc42.Dll File

If the mfc42.dll file is included in a certain program, reinstall the program once the mfc42.dll missing issue occurs. By doing so, the missing mfc42.dll will be replaced. If the file isn’t missing, this operation will reassociate it with the DLL file. So, you can also have a try.

Method 10. Repair Your Installation of Windows

You can also try using Startup Repair to fix this mfc42dll error on your PC. Startup Repair is a built-in tool of Windows that can scan your computer for system issues (corrupt system files, invalid boot files), then try to fix the problem. Here are the detailed steps for using it:

  1. Enter the Windows Recovery Environment.
  2. Navigate to Troubleshoot > Advanced options > Startup Repair.
  3. Then the Windows 10 Startup Repair tool will automatically diagnose and fix the computer problems.

Method 11. Perform a Clean Installation of Windows

If all the above methods are unable to help you fix the mfc42dll error, you can try performing a clean installation of Windows to fix this error. You can refer to these posts according to your needs:

I encountered an mfc42dll error on my PC. This bothers me a lot. Luckily, this post helps me fix this error successfully. I want to share it with you.Click to Tweet

Bottom Line

This post provides the possible factors that can cause the mfc42dll error and 11 fixes to help you fix it. You can try these fixes on your own to resolve this error.

Do you know other methods to solve this error? Please share your ideas or experiences with us in the following comment zone. In addition, if you encounter problems while using MiniTool Partition Wizard, please contact us via [email protected]. We will get back to you as soon as possible.

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