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Yes, it is being used for Windows Update delivery optimization, you may refer to Delivery Optimization workflow, privacy, security, and endpoints - Windows Deployment | Microsoft Learn which explain about it and you will see this URL there.
Is the URL http://dl.delivery.mp.microsoft.com/ safe?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anonymous
Is the URL http://dl.delivery.mp.microsoft.com/ associated with Microsoft? Additionally, is it utilized by Windows Update?
Windows for home | Windows 10 | Windows update
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