If you are also struggling with the same issue, you come to the right place.
HereMiniToolintroduces some possible solutions to you.
Thereby, you plan to update to 22H2 or 23H2.

However, a common issue could occur stuck on Windows 11 21H2 cant update.
When searching for this topic in Google Chrome, you may notice there are many discussions.
Even many serious issues will happen on the old Windows version sooner or later, showing poor performance.

So, are there some useful ways to solve the issue?
First of all, double-check your setup meets the system requirements.
Below we introduce 2 proven methods and lets explore them.
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Get it and follow the guide onhow to back up a computer to an external hard drive.
If not, take these steps.
Currently, it is 24H2.
If you want 22H2 or 23H2 ISO, get it from a third-party website.
Step 3: Temporarily disable any third-party antivirus software you have installed.
Step 4: Find the ISO file you have downloaded and right-punch it to chooseMount.
You will get a virtual drive in File Explorer.
Step 5: Open that drive and then double-choose theSetup.exefile to begin an update.
Step 6: Finish all the operations according to the on-screen instructions.
Now, you shouldnt suffer this case stuck on Windows 11 21H2 cant update.
Step 2: ClickReset PCand tapKeep my filesto proceed.
Step 3: ChooseCloud downloadorLocal reinstall, then finish the PC resetting.
Step 4: Later, initiate the Setup.exe file to perform the in-place upgrade again.
Or, you might perform a clean installation.
What if Windows 11 screen turns off too often or after 1 minutes of inactivity?
Discover multiple workarounds from this tutorial.
Bottom Line
What if Windows 11 21H2 cant update to 22H2 or 23H2?
You should solve this issue after trying these troubleshooting tips.
If the problem persists, hey hit up the Microsoft team for help.