Every time Microsoft releases a new cumulative update for Windows 10, it appears on Windows Update servers. For end users, their computers fetch updates automatically from these servers, utilizing valueable internet bandwidth. While Windows Update has some tricks of its own related to Delivery Optimization to share updates across other PCs in a network, it is sometimes convenient to download the offline installer of a big update. If you have more than one computer and would like to save your time and bandwidth, you can download and install the update manually on all of them.
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