question

Your processor is not supported, I believe you check the requirements for the Windows 10.
The list of supported CPU for Windows 11 are:
https://docs.microsoft.com/en-us/windows-hardware/design/minimum/supported/windows-11-supported-intel-processors
I advise you to open start and search for feedback and open Feedback Hub app and file a report and request your CPU become supported. There is no guarantee but it will draw attention of the Windows team and people with the same issue would be able to upvote it.

Hello,

Unfortunately, i3-6100T processor is not compatible for Windows 11, according to Microsoft.

Please check with official Windows 11 list of supported processors: https://docs.microsoft.com/en-us/windows-hardware/design/minimum/supported/windows-11-supported-intel-processors

You can drop a feedback to Microsoft about this, using Feedback hub app.

Regards.

Hello @SunilPanwar-5239,

Thank you for your question.

The upgrade requirements for windows 11 according to each processor is released together with the device manufacturer, maybe the manufacturer has not released its processor listing to Microsoft and therefore it does not appear in the compatible processors listing.

I recommend that you ask the manufacturer for the fastest evaluation of your CPU's processor, that way they will incorporate your processor by sending the information to Microsoft and then your processor will be accepted.

In addition, I recommend that you also post your question on the windows 11 forum, so that the team can investigate further, because maybe there are problems with the same processor as you.

To do this, just click on the link below by clicking on the top menu in the option "Ask a question" and describe the entire problem, including images:

https://answers.microsoft.com/en-us/windows/forum?sort=LastReplyDate&dir=Desc&tab=All&status=all&mod=&modAge=&advFil=&postedAfter=&postedBefore=&threadType=All&isFilterExpanded=false&page=1

If the answer is helpful, please vote positively and accept as an answer.