In some cases, these errors could indicate aregistryproblem, a virus or malware issue, or even ahardwarefailure.
How to Fix Mfc100.dll Errors
Don’t download mfc100.dll from a “DLL download” website.
There are many reasonswhy downloading DLL files like that is a bad idea.
Mfc100.dll Error.
Download the Microsoft Visual C++ 2010 Service Pack 1 Redistributable Package MFC Security Updateand run it.
This will replace/restore the mfc100.dll with the most recent copy provided by Microsoft.
If you need the 32-bit version, download the file calledvcredist_x86.exe.
Mfc100.dll Error.
The 64-bit version is namedvcredist_x64.exe.
Keep that in mind if completing this step doesn’t fix the problem.
Restore the file from the Recycle Bin.
The easiest possible cause of a “missing” mfc100.dll file is that you’ve mistakenly deleted it.
execute the sfc /scannow System File Checker commandto replace a missing or corrupt copy of the mfc100.dll file.
This DLL file is provided by Microsoft, soSystem File Checkershould restore it.
Run a virus/malware scan of your entire system.
Use System Restore to undo recent system changes.
Reinstall the programthat’s producing the mfc100.dll error.
If one of these errors happens when you use a particular program, reinstalling that program might help.
Test your memoryand thentest your hard drive.
If the hardware fails any of your tests,replace the memoryorreplace the hard driveas soon as possible.
Repair your installation of Windows.
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 mfc100.dll error, this should be your next course of action.
All the information on your hard drive will be erased during a clean install.
Troubleshoot for a hardware problemif any errors persist.
After a clean install of Windows, your DLL problem can only be hardware related.
Need More Help?
Re-installing the tool may fix this problem.
Cannot find [PATH]\mfc100.dll
This program can’t start because mfc100.dll is missing from your machine.
The file mfc100.dll is missing.
Cannot start [app].
A required component is missing: mfc100.dll.
like install [utility] again.
Paying close attention to when you see the error is helpful.
