## Problem
When trying to use cURL from the **OSGEO4W** shell, it throws the following error:
> curl: (60) SSL certificate problem: unable to get local issuer certificate
More details here: https://curl.haxx.se/docs/sslcerts.html<br><br>
curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.
While this seems to be a chronic issue, I couldn't find any indication that cURL or GDAL devs thought this was their repsonsibility. So, off to try and find a workaround.
## Workaround
From what I can ascertain, there is a missing certificate in the compilation of cURL that comes with **OSGEO4W**. Fortunately, [someone was kind enough to share the steps they took to workaround this issue](https://superuser.com/a/442797/988954). They were having problems with cURL on Windows more generally, but the steps are more or less the same. I've adapted them for **OSGEO4W** shell:
1. From [http://curl.haxx.se/docs/caextract.html](http://curl.haxx.se/docs/caextract.html) , Download the `cacert.pem` file.
2. Navigate to the location of cURL in your **OSGEO4W** installation. For me this was `C:\OSGeo4W64\bin`. Place `cacert.pem` in this directory.
3. Rename `cacert.pem` file to `curl-ca-bundle.crt`
At this point you should be able to run cURL from the the **OSGEO4W** shell.