Hi Mills, Derek,
Thank you for reaching out to us on the Microsoft Q&A forum.
Where am I seeing this?
Unit 3: Exercise - Create and manage network security groups
After activating the sandbox, please ensure that you are in the Bash environment. When executing the AppServer VM script, you will be required to create a password that must be at least 12 characters long and include a combination of letters, numbers, and special characters. In the next step, when executing the DataServer VM script, you will need to create a separate password, ensuring that it is different from the one used for the AppServer.
Additionally, we have tried from our end and successfully completed the exercise, as illustrated in the screenshots provided below:
If the issue still persists, please do let us know.
I hope this information is helpful, please Accept Answer & Upvote so that it would be helpful to community members.