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How to install Windows Update offline

One of the most dreaded feature in Windows 10 is auto-update. Its well known to be causes of system lag & crash. Today I will show you how to install Windows Update manually and some helpful tips to prevent them from eating your system resources randomly


Each month, Microsoft releases cumulative update to Windows. This contains security & bug fixes, so it’s important. By design, the services (also known as WSUS) will run automatically each day to check for a new updates. The result of this mechanism is great on PC with SSD and high speed internet connection.

From user-experience, its also a good concept. You don’t need to open settings just to update and interrupting your activities. Well, it’s not perfect too. Most of the time if you’re using HDD, you’ll see 100% disk usage on task manager, so it makes your whole system lagging. Also it is a bad news if you use mobile network/broadband, update will consumes it freely 1GB+.

That sounds bad right? Well how about this: if your system constantly check for update+defragment a lot, it will cause your SSD to wear-out much faster (HDD affected too).

Why you (may) want to install updates offline?

First, it does not need to divide resources equally between foreground (program you’re using) and background services. With installing offline, the update will become a foreground thing (the system focus) so it will run at max performance.

Second, it reduce the chance of downloading “other random updates”, so your bandwidth isn’t consumed by big update.

Third, In case you have limited internet connection, you can download the update while you’re on public WiFi, then bring it to your laptops to be installed. You can also share the update with your friends computer (assuming they have the same major version as yours).

Fourth, it’s the old but golden method to install updates. Back then updates are distributed as CD/DVD disc, so you could install them anywhere anytime.


The hardest thing to do in installing updates offline is to know about KB number for specific updates. Fortunately, moderator in Windows subreddit is known to upload info and specific link to cumulative updates over the years. Usually it is on the pinned post section.

In picture I showed above, there are KB followed by random number, and some other says “EOS”. EOS means End of service, so you should upgrade Windows asap. KB means “Knowledge Base”. Let’s says I have Windows 10 21H1, so I press the ‘KB5014699’ link. It leads to:

Don’t worry about technical slang that you don’t understand, it’s fine. But, it is still advise to read the ‘IMPORTANT’ section, and try to understand it. To download the updates, scroll down till “Install this updates” section.

Usually we got update using Windows Update services (first item). Now, we choose the highlighted ‘Microsoft Update Catalog’ link, this will take us to:

Microsoft Update Catalog

Now this is the most confusing part. Focus yourself on the first 2 row in ‘Title’ column. It may look similar, one is x86 and another is x64. Most computer today have 64-bit version, so choose that (the highlighted entry in image above). Also, look at the version and match it to the one you currently have. Confused? Match the version & architecture to the one in Settings > System > About Windows.

Download info

After pressing download button on the left side, your browser will open a new mini-window confirming the file name. Press the blue hyperlink to download. And, after the download process is done, you can install it now, later, or share it to your friend.

Installation process is pretty straightforward, just click OK, and wait for 1-2 hours (depending on HDD/SSD). That’s it for today’s tutorial. See you another time.


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