Solution - that worked for me
Right click on "Sign in" and then click "open in incognito window" and then click sign in again and it asked me to login and authenticate. the sandbox started working for me in incognito window
This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
I am currently trying to complete the AZ-9000 Training. I am currently in Describe the core architectural components of Azure, Unit 4 of 9, Exercise - Explore the Learn sandbox. When signing in on the right-hand side, I click sign in, choose my work account and after it looks as if I am signed in, it returns me to "Sign In" on the right-hand side and the sandbox never launches.
Solution - that worked for me
Right click on "Sign in" and then click "open in incognito window" and then click sign in again and it asked me to login and authenticate. the sandbox started working for me in incognito window