My azure portal cloud shell is not working, unable to open while click on the cloud shell getting this error message.

The error {"code":"InvalidSubscription","message":"Invalid subscription identifier provided."} means Cloud Shell cannot validate or use the subscription it is trying to provision resources in.

Use these steps to fix it:

1. Verify role assignment on the subscription
   In the Azure portal:
   • Go to Subscriptions → select the subscription intended for Cloud Shell.
   • Open Access control (IAM) → View my access.
   • Ensure the account has at least Contributor or Owner on that subscription.
     If not, request the appropriate role from a subscription administrator.
2. Check and register required resource providers
   For the same subscription in the Azure portal:
   • Go to Subscriptions → select the subscription.
   • Select Resource providers.
   • Ensure the following providers are Registered:
     • Microsoft.Storage
     • Microsoft.Resources
     • Microsoft.ContainerInstance
     • Microsoft.CloudShell
   • If any of these show as NotRegistered, select them and choose Register.
     Wait until their status is Registered before retrying Cloud Shell.
3. Confirm the correct subscription is active in CLI (if possible)
   If Cloud Shell opens partially or if using Azure CLI locally:
   • List subscriptions:
     az account list -o table
   • Confirm the target subscription is listed and its State is Enabled.
   • If a different subscription is set as default, set the correct one:
     az account set --subscription <your-subscription-id-or-name>
4. Reset Cloud Shell user settings (if it worked before)
   If Cloud Shell previously worked and the subscription is valid and enabled:
   • Open Cloud Shell (even if it errors, wait for the UI to appear).
   • Select the Settings (gear) icon in the Cloud Shell toolbar.
   • Choose Reset user settings and confirm.
   • Close and reopen Cloud Shell, then reselect the correct subscription and configure storage or ephemeral session again.
5. If the problem persists, open a support request
   If all the above checks are correct and the error still appears:
   • In the Azure portal, select the Support & Troubleshooting icon.
   • Choose Help + support → Create a support request.
   • Provide:
     • The subscription ID being used.
     • The full Cloud Shell error message.
     • The Request correlation id from the error (JIOINDIACENTRAL:20260710T115553Z:...). Azure support can then investigate subscription validation for Cloud Shell.

References:

• Azure Cloud Shell frequently asked questions (FAQ)
• Troubleshooting common training issues in Microsoft Learn
• Unable to start cloud shell - Microsoft Q&A