Windows Update stuck on loading

To perform the major update, use the tool to create a USB key with a minimum of 8GB.

Windows 11 if compatible, you can check with WhyNotWin11

https://github.com/rcmaehl/WhyNotWin11/releases

Windows 10 https://www.microsoft.com/fr-fr/software-download/windows10/

Windows 11 https://www.microsoft.com/fr-fr/software-download/windows11

If you already have the Windows ISO file, which you can also download with the tool or the link, you can create your USB key with Rufus

If the PC is old, create the key in MBR mode

If it is recent (Windows 8 or higher) in GPT mode > For Windows 11 GPT

Uninstall all installed antivirus or firewall and restart

Click on setup.exe in the USB key.

There is a way without a USB key, but if it crashes, you won't have a lifebuoy.

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If you ever need to reinstall from scratch, start from the Boot Menu of the PC

https://www.malekal.com/liste-touches-acces-bios-boot-menu-constructeur/

If you don't see it, you can search Google for "[Brand Model] Boot Menu Key"

Choose "Custom installation" (Not upgrade)

No need to format if there is space; if there is data, it will be in a Windows.old folder

Install on the same partition, or alternatively, delete all system partitions and create a new one (This will delete the data).

Hello,

Windows 10 is not up to date.
To update it to version 21H2:
Download this -->> MediaCreationTool21H2 <<--
Run it
Check --> Upgrade this PC now

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Afterwards, check if Windows 11 is compatible, you can see with WhyNotWin11 that fabul gave you as a link.

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Humans are at their best when things are at their worst.

I didn't quite understand what I was supposed to do.

Do I need to download the update and put it on the USB stick? And then what? How do I create my USB in GPT mode?

Hello,

Delete everything in the folder C:\Windows\SoftwareDistribution\Download

Then restart Windows.

Then let us know if your version is 21H2?

With Run (Windows + R): WINVER