KB: Sign In button is not active and Error From

Altium Designer Altium Designer
Starting in version: 18 Up to Current
When I start Altium, I first get an error "Error from :" which I can get past by clicking OK, but then the Sign in dialog box which follows, will not let me click the Sign in button after I enter my Username (Email) and Password. The Sign in button stays grayed out.

Solution Details

If you get this error when Altium Designer tries to sign you in (Altium will try to sign you in at startup if you have enabled "Sign me in when I start Altium Designer"):
 
Error.png

 
Or if the sign in dialog's Sign in button will not activate:
 
signin.png

 
Check Preferences System Account Management Altium Account Management Servers section Location and select portal365.altium.com, then click the OK button

preferences.png

*** Notes:
Versions of Altium Designer 19 and older will have portal2.altium.com in the pull down.

In AD18, the Sign in button will be active always, and you will get the error when you click the button.
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