The answer to your question is yes, downloaded updates can be installed on the computer without internet. However, you might be required to have your computer connected to the internet while configuring windows updates.

Can you update Windows 10 without internet?

Windows maintains a catalog of all the updates that it has released for a particular OS. You can directly download an update from this catalog (.exe file) and install them offline without an Internet connection on any PC. … Just double-click on the downloaded file to install it.

Does Windows Update need internet connection?

Installing Windows Updates requires an active internet connection to download the available updates onto your computer. If your computer isn’t connected to the internet it can not be updated.