Wednesday, July 6, 2016

an error occurred while registering the file C:\windows\system32\mfc40.dll [Solved]

an error occurred while registering the file C:\windows\system32\mfc40.dll

I'm trying to get an 3 year old software program to run on my new computer (windows 7) and this message comes up.

Anwsers to the Problem an error occurred while registering the file C:\windows\system32\mfc40.dll

Download Error Fixer (Free)

Explanation of Regsvr32 usage and error messages
http://support.microsoft.com/kb/249873#appliesto
The Regsvr32.exe file in the System32 folder is a 64-bit version.
When you run Regsvr32 to register a DLL, you are using the 64-bit version by default
Error Message When You Run Regsvr32.exe on 64-Bit Windows
http://support.microsoft.com/default.aspx/kb/282747?p=1
 
Have you tried right-clicking on the shortcut to the program, or the .exe, and selecting the "Run As Administrator" option?
Make older programs run in this version of Windows (Windows 7)
http://windows.microsoft.com/en-us/windows7/Make-older-programs-run-in-this-version-of-Windows
Help with Windows 7 compatibility problems
http://windows.microsoft.com/en-us/windows7/help/compatibility
Windows 7 Compatibility Center
http://www.microsoft.com/windows/compatibility/windows-7/en-us/default.aspx

Tweak IE Options
  • Open Internet Explorer.
  • Go to "Tools > Internet Options > Advanced Tab".
  • Uncheck "Enable third-party browser extensions".
  • Click "Apply".
  • Reboot your computer.

Recommended Method to Repair the Problem: an error occurred while registering the file C:\windows\system32\mfc40.dll:

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1. Click the button to download SmartPCFixer . Install it on your system.  Open it, and it will scan your computer. The junk files will be shown in the list.

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