Mail app will not open browser to put in password so I can turn my email account to online mode

taragracew wrote:

My mail app has two accounts linked to it. The account that I actively use is set to offline. I understand I need to change this to send emails, but when I hit the lightening bolt next to the email address in the side bar, it asks me to enter the password for authentication. When I hit the blue open browser button, I am stuck on a loading box screen with a loading sign spinning. It doesn't change or send me to the browser to put in my password. The same thing happens when I go through Internet Accounts from system preferences. Please help me fix this

Verify you have Safari set as the default browser and try again.