Its major update, the 24H2 version, has anew CPU requirement SSE4.2.
On a computer with unsupported hardware, you are blocked from installing Windows 11 24H2.
What is Windows X-Lite Micro 11 23H2 v2?
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For file backup, we suggest running MiniTool ShadowMaker, a freePC backup softwarefor Windows 11/10/8.1/8/7.
Then, follow the guide on how tobackup files.
Step 2: Scroll down to the bottom and click theDownload Linkbutton.
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Step 3: TapDOWNLOAD.
Step 4: Unzip the .7z file that includes a 1.5GB ISO to a folder using7-Zip.
Step 2: Choose the downloaded ISO file and Rufus will configure some values automatically.

Then, clickSTARTto write the ISO to the USB drive.
What is Windows X-Lite Optimum 11 24H2?
How to get this system downloaded and installed?

Here is the tutorial.
Bottom Line
What is Windows X-Lite Micro 11 24H2?
How to download its ISO and install it on an old computer?
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You have a clear understanding now.
If needed, follow the given guide to get it.