Why was my i3 6100u hp laptop locked out of windows 11 update

i3 6100U does not support officially Windows 11.

My hp i3 6100u laptop was locked out of windows 11 update I had to do a clean install. The laptop is performing very well with no problem whatsoever. My laptop meets all the windows 11 requirements apart from being an old processor. It also has 16gb ram.

Windows 11 requirements; https://docs.microsoft.com/en-us/windows/whats-new/windows-11-requirements

Specifically check this:

Processor: 1 gigahertz (GHz) or faster with two or more cores on a compatible 64-bit processor or system on a chip (SoC).

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Microsoft details what happens or won't happen if you install 11 on a device that does not meet minimum system requirements.

https://support.microsoft.com/en-us/windows/installing-windows-11-on-devices-that-don-t-meet-minimum-system-requirements-0b2dc4a2-5933-4ad4-9c09-ef0a331518f1

Remember: NO Security Updates.

Your device might malfunction due to these compatibility or other issues. Devices that do not meet these system requirements will no longer be guaranteed to receive updates, including but not limited to security updates.

This PC doesn't meet the minimum system requirements for running Windows 11 - these requirements help ensure a more reliable and higher quality experience. Installing Windows 11 on this PC is not recommended and may result in compatibility issues. If you proceed with installing Windows 11, your PC will no longer be supported and won't be entitled to receive updates. Damages to your PC due to lack of compatibility aren't covered under the manufacturer warranty.