atorreno

k, figured it out.

Apparently, wp_remote_get() doesn’t have up-to-date certificate authorities, or perhaps doesn’t have any at all, so it can’t verify ssl certificates. I suppose this is Windows-specific? Not sure.

This article talks about it
https://wordpress.stackexchange.com/questions/21749/what-is-the-relationship-between-curl-wordpress-and-cacert-pem

So the two options are to install certificate authorities, which I couldn’t figure out, or to turn off ssl verification

in twitter-widget-pro/lib/wp-twitter.php
find this
$resp = wp_remote_get($request_url);
and change to this
$resp = wp_remote_get($request_url, array('sslverify'=>false));

just in case I also changed this
$resp = wp_remote_request($request_url, array( 'method'=>$method, 'body'=>$parameters));
to this
$resp = wp_remote_request($request_url, array( 'method'=>$method, 'body'=>$parameters, 'sslverify'=>false));

I get the same thing that I got by tinkering with your code

SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

According to this:
https://richardwarrender.com/2007/05/the-secret-to-curl-in-php-on-windows/

I have a few extra steps in Windows before I can make the remote call to Twitter.

I’m too far down the rabbit hole at this point. Is your code eventually using cURL? Can you point me in the right direction as to where I insert the fix mentioned in the Richard Warrender blog post?

https://richardwarrender.com/2007/05/the-secret-to-curl-in-php-on-windows/

This looks promising: I will try it once I get home

Digging into your code I see this
$token = $this->_wp_twitter_oauth->getRequestToken( $auth_redirect );

which generates this error
SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

Sorry, I forgot to mention that, v2.5.2