Some of the common malfunction messages include issues with the following files: D3dx9_43.dll, Xinput1_3.dll, Hal.dll, Kernal32.dll and others. There are many types of DLL issues that may appear on a Windows system. Dynamic links help programs use resources, such as memory and hard drive space, more efficiently. Meaning of qt5core.dll issueĭLL Stands for 'Dynamic Link Library.' A DLL (.dll) file contains a library of functions and other information that can be accessed with a Windows program. The article provides details on what the issue means, potential causes, and ways to resolve the issue. It may be possible to resolve DLL issues with special software that repairs system elements and tunes system settings to restore stability. These types of malfunctions may occur on computers that do not undergo regular maintenance, which may lead to critical glitches and system malfunctions. In certain cases, a qt5core.dll issue may occur when your computer system becomes overloaded or important program files go missing, get accidentally deleted or become corrupted. The causes mentioned below are only the most common ones. DLL issues may happen due to a number of different factors.