A DLL is a library that contains code and data that can be used by more than one program at the same time. If you are getting an error stating a certain DLL is missing, then this means that file has become corrupted or deleted.
A good first step to resolving this is reinstalling the software – in most cases- the game.
Below are some common errors
- D3dx9_43.dll Not Found
- D3dx9_43.dll is Missing
- Xinput1_3.dll not Found
These errors are saying that there is a piece of DirectX that is missing. (DirectX is a Microsoft Program that determines the hardware capabilities of your computer, and then sets the program parameters to match.) To resolve those errors, reinstall Direct X from Microsoft
You will also need to make sure that Internet Explorer (even if it isn't your main web browser) is up to date. Internet Explorer
- PhysX or Physxloader.dll
You have a Nvidia Video card and need PhysX installed. PhysX from Nvidia
- WTKernal.Dll Is Missing
WTKernal errors occur when you try to install an older game from a backup disc onto a newer Operating System. (A game designed for Windows XP on a Windows 10, for example.) If the game you are trying to install is not compatible, you can either install the game on an older, compatible computer or submit a request for help from Customer Support. They can determine if there is a solution available. Be sure to include the OS your current computer is on, as well as what game you are seeing this error with.
MSVCP120.dll and MSVCR120.dll are a part of Microsoft Visual C++ and is often required for running programs developed with Visual C++. If reinstalling the game does not fix the issue, then you might need to reinstall the Microsoft Visual C++ Redistributable package which can be found here: Microsoft Download Center
(x86 for 32bit (x86) Windows, x64 for 64bit (x64) Windows. If using a 64bit Windows, install both.)
Are you still getting the error that was not listed above?
If that's the case, typically the error is being caused by security software interference.
A security software interaction when downloading a game can cause some .dll files to become altered or quarantined. You will want to review some helpful information for properly configuring your security software in this Help Center article.