At the same time, KB4284835 also brings some issues of its own. For example, many users reported that the update often fails to install. There are many error codes that appear on the screen when the process fails, and it seems that error 0x800f0900 is the most frequent one. Here’s how one user describes the problem on Microsoft’s forum: If you can’t install KB4284835 on your computer, here are a few quick suggestions on how to fix the problem:

Update your drivers — running outdated drivers may prevent you from installing the latest OS updates. Disable your antivirus software — security software may sometimes block Windows 10 updates. Turn off your antivirus, download and install the updates and then turn it on again. Reset Windows Update — launch Command Prompt as administrator, enter the following commands and hit Enter after each one: net stop wuauserv net stop cryptSvc net stop bits net stop msiserver Ren C:\WindowsSoftwareDistribution SoftwareDistribution.old Ren C:\WindowsSystem32catroot2 Catroot2.old net start wuauserv net start cryptSvc net start bits net start msiserver

If the problem persist, here are a few additional troubleshooting guides that you can use to solve it:

Fix Windows update issues with these two tools “This might take several minutes” Windows update error [FIX] How to Delete Downloaded Windows Updates Which Failed to Install

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