Mfc100u.dll was not found — simple fix

If mfc100u.dll is not present on your computer, you might be unable to run various programs. Here’s how to get mfc100u.dll back on Windows.

The following are some instances of mfc100u.dll error messages:

• The code execution cannot proceed because mfc100u.dll was not found.
• The program can’t start because mfc100u.dll is missing from your computer.
• Error loading mfc100u.dll. The specified module could not be found.

Because mfc100u.dll is part of the Visual C++ runtime library, it is included when you install Microsoft Visual C++ 2010 Service Pack 1 Redistributable Package.

To be safe, it’s best to get it through Microsoft’s official website: https://www.microsoft.com/en-us/download/details.aspx?id=26999

You need to install both the x86 and x64 versions. Installing these is almost a sure way of fixing mfc100u.dll issues. After installing, restart your device to make sure the update is applied.