Azure troubleshooting
Failed Azure deployment
Go to the Azure portal and locate the resource group. In the main blade, navigate to 'Deployments' in the 'Settings' subsection. The list of deployments for this resource groups will be displayed; including the status of the deployment.
For example, this resource group has one failed deployment:
The message is quite clear in this case: the local administrator's password for the Azure Virtual Machine is not strong enough. The solution to this particular problem is also quite easy: go back to the installer and provide a user with a strong password and deploy again. As you can see in the screenshot, this deployment can be done in the same resource group: it will merely update the existing resources and create new resources if they don't exist yet.
Azure SQL: The request limit for the database is XX and has been reached
If you get this exception, you have reached the limits of the amount of concurrent connections and should upgrade the Azure SQL database. In the exception message you'll find this link that provides some context and this link contains the instructions on how to deal with this error.