When you are deploying a “big” software update like KB2919355, with System Center Configuration Manager, you can have the error code 0x800f0821 on some computers.
The computer receives the update, downloads it and starts to install it but the installation will fail.
Installation failed 0x800f0821
This error is raised because the execution time was reached. Depends on computers and servers, you may or not have this error on all SCCM clients.
Let’s see how to change the configuration in SCCM.
With Windows 10, Microsoft introduces a new method to get Windows Update. Before it, you can only download update from the Microsoft servers, but with Windows 10 you can also get update from computers already updated. It uses a technology like peer to peer (P2P).
By default, Windows tries to get update from Microsoft server, computer in your local network or from others computers on the internet. This new method speeds up the update download but it means that you can also send data to computers on internet. Depends on your upload rate, this can slow your internet navigation.
Let’s see how to disable this function: