An Azure service that is used to provision Windows and Linux virtual machines.
Hello Dan Jakubiec,
Welcome to the MS Q&A forum.
There are could be several reasons.
First, please make sure what you are signed in to activate the sandbox and provided all required permissions:
Second, after activating the sandbox, you used the same email address to access the Azure Portal and accessed the Microsoft Learn Sandbox directory.
You will be redirected there automatically if you are using the link "Sign in to the Azure portal" from the same training page.
Hope above answers your question and concern. Let me know if you need additional assistance. If the answer was helpful, please accept it and complete the quality survey so that others can find a solution.
Sincerely, Olga Os.