Setting NSG immediately
When NSG is set from PowerShell or the portal, the operation successfully completes soon but it takes a few minutes before the NSG setting will take effect.
Please set NSG setting immediately.
Though new connections are blocked, established connections are unaffected by addition of Deny rule (for example, a SSH connection). An improvement would be to have a flush facility which would implement the NSG rule set immediately and including active connections.
I have same issue.
In some case, it takes 30 minutes more to be effected.
I'm hoping to improve this behavior.