How to chanage the Gmsh version 1.) Download the latest Gmsh SDK and extract it 2.) Copy the extracted folder to: ..\GmshCommon\GmshLib\deps 3.) You can remove the folder deps\gmsh-#.#.#-Windows64-sdk\bin 4.) In the \gmsh-#.#.#-Windows64-sdk\include folder swithch the files: gmsh.h → gmsh.h_original gmsh.h_cwrap → gmsh.h 5.) In the GmshCommon project properties replace the Gmsh folder names in: Configuration Properties → C/C++ → General → Additional Include Directories Configuration Properties → Linker → General → Additional Include Directories 6.) Copy the Gmsh-#.#.dll to the ..\PrePoMax\bin\x64\Debug\lib and ..\PrePoMax\bin\x64\Release\lib folders