How to Install Windows 10 21H1 Update Manually

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Before you can update your Windows 10 to 21H1 offline, you must first determine your Windows PC’s processor architecture. Once you have this information, then you’ll download update 21H1 from Microsoft’s updates catalog.

The first section of this guide provides steps to check your PC’s processor architecture. In addition to that, the first section also shows you how to download and install Windows 10 21H1 update manually.

Some readers may not want to install Windows 10 21H1; instead, they want to install the latest Windows update. If you wish to install the latest Windows 10 update, follow the steps in the second section of this article.

This guide also includes an FAQ section where I answer most users’ questions about manually installing Windows 10 updates.

 

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How to Manually Install Windows 10 21H1 Update from Microsoft’s Updates Catalog

How To Manually Install Windows 10 21H1 Update From Microsoft’s Updates Catalog

Use the steps in this section if you want to install Windows 10 21H1 update. If you prefer manually installing the latest Windows 10 update, please scroll down to the second section.

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Furthermore, this section is divided into two sub-sections. The first section has the steps to check your Windows 10 processor architecture.

Wondering why you need this information? You need it so you can download the right version of the update 21H1.

Then, in the second sub-section, you’ll download the update 21H1 from Microsoft’s updates catalog site and install the update.

Get Your Windows 10 Processor Architecture

  1. Search cmd using the Windows 10 search box. Then, from the search result, click Command Prompt.
  1. To determine your PC’s processor architecture, on the Command Prompt, type the command below. Then, press the Enter key on your keyboard to run the command.

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systeminfo | find "System Type"

The command will return your computer’s processor type. My screenshot below shows that mine is an “x64-based PC”.

Note this information as you need it to download the correct version of the Windows 10 21H1 update for your PC.

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How To Manually Install Windows 10 21H1 Update From Microsoft’s Updates Catalog

Manually Download and Install Windows 10 21H1 from Microsoft’s Updates Catalog

  1. Click the Microsoft Update Catalog link for Windows 10 21H1. Then, locate the update for your PC’s processor architecture from the search results.

    Also, ensure that you download an update that starts with the word “Cumulative.” Another important thing to note is the “Products” column; it must include “Windows 10, version 1903 and later.”

    In my example, I’ll download the update “2022-08 Cumulative Update for Windows 10 Version 21H1 for x64-based Systems (KB5016616)”.

    I am downloading this update because it includes “x64-based”.

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Manually Download And Install Windows 10 21H1 From Microsoft’s Updates Catalog
  1. Once you determine the right version of the update you should download, click the “Download” link on the far right (I labeled it (3) in the screenshot above).
  2. Then, on the pop-out window, click the link to start downloading the update.

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The download may take a while. It is about 700BM.
  1. Finally, to install Windows 10 21H1 update manually using the offline update installer, locate the file and double-click it. Once you double-click the file, follow the wizard to complete the installation.
If the installation fails with an error message, it is likely that you either downloaded the incorrect version for your PC or have a later update. To check your current Windows 10 update version, search winver, and open the app. If your Windows version shows that you have an update later than 21h1, follow the steps in the next section to install the latest Windows 10 update instead.

How to Install the Latest Windows 10 Update Manually

How To Install Windows 10 21H1 Update Manually

As I have already mentioned several times in this guide, follow the steps in this section if you wish to install the latest Windows 10 update. If you wish to manually install Windows 10 21h1 update, DO NOT follow the steps in this section.

  1. Open Windows 10 update download page – Microsoft.com/en-us/software-download/windows10 (link opens in a new browser tab).
  2. Then, below Windows 10 May 2021 Update, click the Update now button. Your browser will download Windows 10 Update Assistant file to your computer.
Depending on when you’re installing the update, the Windows 10 update page will display the latest update.
  1. The location of the downloaded file depends on the browser you use. However, if you use Google Chrome or the new Microsoft Edge, on the bottom left of the browser, click the arrow beside the file – then, click Show file in folder.

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How To Install Windows 10 21H1 Update Manually
  1. To begin the processing of downloading and installing the Windows 10 21H1 update manually, double-click the Windows 10 Update Assistant file.

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  1. Then, on the first screen of Windows 10 Update Assistant, click Update Now.

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How To Install Windows 10 21H1 Update Manually
  1. The update assistant wizard will run a quick compatibility check. If your computer is compatible with Windows 10 21h1 update, it will display the screen below. To proceed to the downloads screen, click Next.

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  1. Then, wait for the latest Windows 10 update to download.
How To Install Windows 10 21H1 Update Manually
  1. When the update is downloaded, Windows 10 Update Assistant will start installing the latest Windows 10 update manually.

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Wait for the first stage of the installation to complete. You can minimize the wizard and continue using your computer as normal. However, if you minimize the update assistant wizard, click the file on your desktop to open it again. See the second screenshot below.
This stage of the installation may take up to 30 minutes. While you wait, I strongly recommend that you save your work. You will be required to restart your computer to complete the installation.
How To Install Windows 10 21H1 Update Manually
  1. When the first stage of the installation is complete, Windows 10 Update Assistant will display this screen with a 30-minute restart count-down.

    If you have not saved your work before, save it now. Then, you may wait for the count-down to force your computer to restart.

    Alternatively, to restart immediately and complete the installation of the update, click Restart now.

  1. Once your computer restarts, the installation process is automatic. It does not require your impute except at the last stages, where you may be required to select some privacy options.

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When the second stage of the installation is completed, your computer may shut down instead of restarting. If this happens (it certainly happened to me!), press the power button to start the computer manually.
Also, after you sign in to Windows 10, it will perform the final stages of the update.
  1. Finally, to confirm that your Windows 10 PC installed the latest update manually, enter winver into Windows 10 search. Then, open the app – it should display the new version of Windows 10.

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The next section has some important FAQs about Windows 10 21H1. However, if you do not wish to read the FAQs, please scroll down to the end of this guide and click Yes to Was this helpful? Thank you!

Frequently Asked Questions About Installing Windows 10 21H1 Update Manually

1. When Did Microsoft Release Windows 10 21H1?

From February 17, 2021, Microsoft started releasing Windows 10 21H1 via the Windows Insiders in the Beta channel. Moreover, from may 18, 2021, the update became available to everybody. What this means is that you should wait until the update is available for your computer via Windows Update.

2. How Do I Force a Windows Update Manually?

If you want to install updates via Windows Update, open it via Settings -> Update & Security. Then, click Check for updates.

3. How Do I Get Windows 10 21H1 Updates Manually?

If Windows 10 21h1 update is not available via Windows Update, follow the steps in the first section of this guide to install it manually.

4. How Do I Fix A Corrupted Windows Update?

If you are having trouble updating Windows 10, follow the steps below to fix a current Windows Update:
1. Stop the Windows Update service
2. Then, Delete every file and folder in %WinDir%\SoftwareDistribution\Download folder
3. Finally, Start the Windows Update service
4. Try running the Windows update again

5. Does Windows 10 Automatically Install Updates?

Yes, by default Windows 10 automatically install updates. However, you can follow the steps in How to Stop Automatic Updates on Windows 10 to temporarily stop Windows 10 updating automatically.

6. Is There Any Risk To Manually Installing Windows 10 21H1 Updates?

There is a minor risk of installing any Windows 10 update. Moreover, by installing Windows 10 21H1 Update before it becomes available via Windows update, you run a minor risk of minor bug problems.

Having said that, I have installed these feature updates using this method and have had no major bug issues.

7. If I Have A Problem With Windows 10 21H1 Update, Can I Uninstall It?

Yes, if you have a problem with this update, you can roll it back by opening Settings -> Update & Security. Then, on the left pane, click Recovery. Finally, below Go back to the previous version of Windows 10, click Get started, and follow the roll-back wizard.

8. What Is New In Windows 10 21H1 Update?

Some of the improvements that came with the Windows 10 21H1 update are Windows Hello multicamera support and improvements to Windows Defender Application Guard. To find out more about this update, read Windows 10 21H1 Update: Features

I hope you found our latest manual Windows 10 update guide helpful? If you found it helpful, kindly spare 2 minutes to share your experience with our community members at Itechguides Community.

You may also provide us with more detailed feedback or share your experience with Windows 10 21H1 update. To share your thoughts and experience with the Windows 10 21H1 update, visit this topic at Itechguides Community.

Finally, for more Windows 10 Itechguides, visit our Windows 10 How-to page. You may also find our Work from Home page very helpful.

References and Further Reading

  1. Microsoft Update Catalog
  2. Install Windows Windows Update Manually – Itechguides.com

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