Hey Team! Is Docker is necessary for windows agent enrollment?

You need docker to build the agent MSI, but after that you can install it on any machine without docker

Now, if i want to install fleet on 400 windows machines, so we have to enroll it using docker in all 400 machines correct?

No , you just need to use one machine with docker installed to generate the MSI with the command from the fleet dashboard, and then once you are happy you can install that same MSI on every machine

Got it, Thanks !

No worries! That confused me at first too!