I have installed PostgreSQL Server 9.6.0 and Python 3.4.2 on Windows 2012 R2 Server.

I copied plpython3.dll to C:/Program Files/PostgreSQL/9.6/lib/

The in PostgreSQL I try running this command: CREATE EXTENSION plpython3u;

And I receive this message:

ERROR: could not load library "C:/Program Files/PostgreSQL/9.6/lib/plpython3.dll": The specified module could not be found.

Under this folder: C:\Program Files\PostgreSQL\9.6\share\extension there are plpython3u files.

How can I get PostgreSQL to recognize this Python 3 extension?