Instead of we should check whether users have login in. If not, we should throw an error like Run Connect-AzAccount to login
Regarding to how to check whether users have login in. We may have following options.
Check whether there is a context through Get-AzContext
Check whether (Get-AzContext).Subscription.Id is null (there is a limitation for this solution, Id could be null in some cases even the users have login in.)
Currently, if users do not do authentication before they run any cmdlets, we will return a confused error messages. See https://github.com/Azure/azure-powershell/issues/26183 for a real case.
Instead of we should check whether users have login in. If not, we should throw an error like Run Connect-AzAccount to login
Regarding to how to check whether users have login in. We may have following options.