We are using Custom Managed image based on Windows 10 RS5 for one of our cloud configuration.
It was working fine but since last week it has started to show us the problems.
Sometimes it takes more than 25 minutes to spin up one agent while all other agents (which are Windows server, windows server core or ubuntu16 custom manged images) come up in 2 to 4 minutes.
I have created new Windows 10 RS3 and Rs5 images but nothing seems to help. It still takes 15/17 minutes to spin up an agent. When I see at "deployments" progress in Azure, It is obvious that the most time is taken while installing the "custom extentions" The VM is created in 3 minutes and can be logged in to, but the deployment of custom extentions takes 10 or more minutes. What could be the possible reason ?
I tried with version 1.1.1 too but with no apparant success. Any clues ?