Something that comes up alot when deploying InTune services is how long do policies take to update and refresh to devices.
Below is the current intervals that are in place.
So what happens if an administrator were to deploy an app or a policy to a device, when will the device receive a notification about the new policy or app? Immediately after the deployment has taken place, Intune will attempt to notify the device that it should check-in with the Intune service. This process normally takes less than 5 minutes. But if the device would not check in to get the new policy, Intune will attempt to notify the device 3 more times. In the case that the device does not receive any of those notifications, the device will get the new policy on its next scheduled check-in with the Intune service accordingly to the tables above.