Hello @Yadav, Govind , Thanks for using Microsoft Q&A Platform.
You can request for quota increase from the Usage + quotas view in the Azure portal or submit a quota increase request from Azure Machine Learning studio: https://learn.microsoft.com/en-us/azure/machine-learning/how-to-manage-quotas?view=azureml-api-2#vm-quota-increases
Looks like there is an issue with your network or internet connection. Try using a different browser or device and see if that helps.
If you still face issues, if you have a support plan, I would request you raise the support ticket under Azure portal for the deeper investigation on this issue.
I hope this helps.
Regards,
Vasavi