
The domains that the delivery optimization service needs to be able to communicate with include: When Windows delivery optimization communicates with the cloud service, it does so over TCP port 443, using the HTTPS protocol. This could indicate a DNS problem or a firewall problem. However, if the DownloadMode returns a value of 99, it means that the PC cannot access the required cloud service. In the figure, the DownloadMode is set to LAN, which is fine. The main thing that you need to check is the download mode. You can see what this looks like in the image below.Īs you can see in the figure, this command returns a wealth of information. As soon as the download begins, open an elevated PowerShell session and enter the following command: Get-DeliveryOptimizationStatus. The easiest way to do this is to open the Microsoft Store and begin downloading an app (the bigger the app, the better).

As you can see in the figure below, this screen contains a slide bar that allows you to turn the delivery optimization feature on or off.Īssuming that delivery optimization is enabled, the next thing that you should do is make sure that the PCs on your network can communicate with the cloud service that controls delivery optimization. You can access the delivery optimization interface by clicking on the Start button and then going to Settings | Update and Security | Delivery Optimization. The first thing that you should do is to make sure that delivery optimization has not been disabled. If you find that delivery optimization does not seem to be working for some of the Windows 10 PCs in your organization, there are several things that you can do to troubleshoot the problem. Windows 10 delivery optimization is also used for Microsoft Store apps. They could instead be downloaded from other PCs on your network or even on the Internet. When Windows downloads an update, the update files are not necessarily coming directly from Microsoft’s update servers.

Windows 10 leverages a delivery optimization feature as a tool for lessening the bandwidth required by the Windows Update process.
