Important: Do not download mfc110u.dll from a "DLL download" website. There are many reasons why downloading a DLL file is a bad idea. If you need a copy of mfc110u.dll, it's best to obtain it from its original, legitimate source.
Note: Start Windows in Safe Mode to complete any of the following steps if you're unable to access Windows normally due to the mfc110u.dll error.
Download the Visual C++ Redistributable for Visual Studio 2012 Update 4 package and run it. This will replace/restore the mfc110u.dll with the most recent copy provided by Microsoft.
You're given several download options from Microsoft for this update, based on the version of Windows you have installed - x86 (32-bit) or x64 (64-bit). See Am I Running a 32-bit or 64-bit Version of Windows? for help if you're not sure what to choose.
Important: Try your best to complete this step. Applying this update is almost always the solution to mfc110u.dll errors.
you can check more details in this link: http://pcsupport.about.com/od/findbyerrormessage/a/mfc110u-dll-not-found-missing-error.htm