Other software or drivers might block the DLL.
The 39- prefix in the error context usually appears inside diagnostic tools or command-line utilities when they fail to load this specific library. dll 39-qmsl-msvc10r.dll 39-
Because the filename contains msvc10 , the file depends on the . If this is not installed on your computer, the DLL will fail to load. Other software or drivers might block the DLL
: The name 39-qmsl-msvc10r.dll suggests it might be related to a specific software or library, possibly a Qt (a cross-platform application development framework) module, given the qmsl part which could stand for "Qt Meta Object Compiler - Qt Quick Meta Language" or similar, and msvc10r which indicates it's compiled for Microsoft Visual C++ 2010 (MSVC10) with a specific runtime library. If this is not installed on your computer,
Deleting it will likely break the associated software. Instead, reinstall the software that requires it.