OMG Simon Thank you, thank you , thank you!!!!
This guide saved me!
I have a salesforce app and I tried to authenticate for 2 days with no success. Following the Guide steps I almost managed.
I had all green bulbs in authentication tester tool so I followed all guide steps.
The automation managed to login (I saw it in a browser) and in output tab the final message is Authentication successful.
I just have one message in automation output that worries me:
and in History Tab the last request response is:
<HTML><HEAD>
<TITLE>Bad Request</TITLE>
</HEAD><BODY>
<H1>Bad Request</H1>
Your browser sent a request that this server could not understand.<P>
Reference #7.ac645e68.1712863173.22cf7763
<P>https://errors.edgesuite.net/7.ac645e68.1712863173.22cf7763</P>
</BODY>
</HTML>
I feel like I'm really close