Hi Shantanu Bhadra,
Thanks for reaching out to us on the Microsoft Q&A forum.
From your question we understand that you are trying to complete the exercise from Exercise - Create a storage blob.
We are sorry to hear that you are experiencing issues in running training scripts in the sandbox.
Before activating the Sandbox kindly follow the troubleshooting steps as mentioned below for the issue:
Step 1: Sign-out from all the tabs in the current browser and clear the cache files and try login again with your learn ID credentials.
Step 2: Sign-out from current browser login and try to login from an incognito window/in-private window.
Step 3: Switch to a different browser and try login again.
After completing the troubleshooting steps kindly activate a new sandbox by clicking the "Activate sandbox" button for an exercise. Upon activating a sandbox, a default subscription named "Concierge subscription" is generated for the Microsoft Learn Sandbox directory along with a default resource group name starting with learn.
Additionally, to the given troubleshooting steps kindly follow the below steps:
- Try logging in with a new personal Microsoft email account into the learn path using a completely different browser. If you do not have one, create a new free Microsoft account. Note that you need to sign in with a Microsoft account, such as Office 365 or Outlook.com, for sandbox access.
Note: Kindly do not delete any resource groups, the sandbox automatically cleans up your resources when you're finished working with any module.
We followed the steps provided in the exercise and successfully completed it from our end as shown in below screenshots:
Please don't hesitate to reach out to us if you have any other queries.
If you found the information helpful, we would greatly appreciate it if you could acknowledge it by selecting the Accept Answer & Upvote options.