I have execute all actions like this How to install PostGIS on Windows?. But when I create extension postgis;

I have got an error message :

"PostgreSQL/9.3/lib/postgis-2.1.dll » : unknown error 193".

How can I resolve this?

  • Have you recently upgraded?
    – RomaH
    Dec 13, 2017 at 20:48

1 Answer 1


Where did you download PostGIS from? Did you download the 32 or 64 bit version? This seems to have resulted before on Windows from a user using a 32 bit PostGIS, with 64 bit libraries.


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