Depending on your internet connection speed, computer hardware, and the type and scope of the update, the time it takes to download and install a Windows update can vary quite a bit. As an example, updating from Windows 10 to Windows 11 usually takes between 20 and 60 minutes. However, if you want to update from a very old version of Windows to a more recent one, you should allow significantly more time since many cumulative updates might need to be downloaded.