Dell Precision T5810 Workstation with Intel(R) Xeon(R) CPU E5-1650 v4 @3.6 Ghz - Processor isn't supported for Win 11 - error

I have that same Dell T5810 with Xeon E5-1620 v3 and it's running Windows 11 without issues. Now I have Dev channel Insider preview build 22504 installed and all new builds has been installed without issues using Windows Update.

Have you check that BIOS support TPM 2.0? My T5810 was originally supporting older TPM1 2 before I update it.

You find update info from Dell support page.

Dell computers that can upgrade from TPM version 1.2 to 2.0 | Dell US

I have Dell Precision T5810 Workstation with Intel(R) Xeon(R) CPU E5-1650 v4 @3.6 Ghz and when I try to upgrade then I get a message on Windows Update as " This PC doesn't currently meet the minimum system requirements to run Windows 11" and when ran PC health check - it shows that "Processor isn't supported for Win 11" and all other requirements are met and no issues.

What are my options and how I can get Windows 11. And my PC still looks brand new with high configuration features. Please suggest.

Your CPU indeed does support all of the hardware security requirements of Windows 11, and it's certainly powerful enough, so your options are either to stick with Windows 10 until 2025, or installing Windows 11 in what Microsoft called "unsupported" mode. In your PC, expectations should be that Windows 11 will run very well indeed.

https://www.theverge.com/22715331/how-to-install-windows-11-unsupported-cpu-intel-amd-registry-regedit

If you’re currently seeing “This PC doesn’t currently meet Windows 11 system requirements” or “The processor isn’t currently supported for Windows 11,” there’s a Microsoft-approved registry hack that should instantly make it better.

I don't even think you need that registry hack, since you should already have UEFI BIOS, secure boot, TPM 2.0, and virtualization based security available, in your workstation.

Anyway, you start by downloading the ISO file from Microsoft. They give instructions for editing the registry, which you should not need to do, but of course you always can. And then you open this ISO, sitting in you File Explorer wherever you downloaded it to, and click on the setup.exe.

Installation should take about one hour. It will reboot a few times, during the process.

Ask Dell

Try that given registry hack and if that doesn't help then you have to create USB installed and do clean install.

This Xeon (or i7-6830 on my laptop) isn't listed in supported CPU list, but those run Win 11 w/o issues.

Windows processor requirements Windows 11 supported Intel processors | Microsoft Docs

Thank you Bert22306. I will try that later this week once i get some time to patiently sit and play with this process.

One question though : "installing Windows 11 in what Microsoft called "unsupported" mode" -- will this cause any issues later where the latest updates may not get installed automatically on my machine ? And will that be vulnerable ? OR any side effects ?

And i will try without updating the REGISTRY KEY as suggested...

Thank you!