You have provided insufficient information for meaningful diagnosis. You say you created a DLL. What is the DLL called? What do you mean by "loading the module"? What, exactly, did you do? What command did you issue or instruction did you issue to make you think that you did this? You need to provide detailed information regarding what you are doing such that people can tell what you are talking about. Example: On Windows 10.0.19042.685 x64 I compiled the extension-functions.c and produced a dll called goobers.dll. Then, using an SQLite3 executable version 3.74.23.1 I issued the following command: .load goobers I got the message "Error: The specified procedure was not found" sqlite3.exe was executed from the command line in the same directory that contains the file goobers.dll. Please run `dumpbin /exports goobers.dll` and post what entry point name is being exported from the DLL.