why doesn't intel xeon support windows 10???

Hi,

Welcome to Microsoft Community and thank you for your interest in Windows 10.

I understand the inconvenience that you are experiencing. I will definitely assist you.

Based on your description, it seems the Xeon processor is not compatible with Windows 10. Please visit the below link on system requirement for Windows 10.

http://www.microsoft.com/en-US/windows/windows-10-specifications

Hi BD,

Thanks for your reply. I have already been through all that I'm not a noob lol. Nothing is the specs explains why I cannot install windows 10. Obviously I have assumed that it is Xeon that's the problem but I want to know why celeron is compatible but Xeon isn't? Any ideas?

I managed to install Win10 from the ISO file (media creator tool) on a twin Xeon machine (previously 8.1 pro) but it was plagued by high levels of system interrupts that made it unusable with an excessively high CPU load, fans roaring etc.

In the end I rolled back to 8.1 and all was under control again. I don't know why this happened really.

Thanks Simon, 

i know the Xeon pre dates the celeron but with it being dual processor I thought it would of worked for sure. How much ram did you have Simon? I've got 8g wondering if it's worth trying what you did? Otherwise I'm getting Linux lol

I have 4 Gb. Its been absolutely fine with 8.1.

.. several months later.... I eventually got my twin xeon HP xw6200 to fly with windows 10.

The clue was in the excessive disk utilisation and high processor load and reading a forum about getting SSDs to work.

For some non-understood reason both my SATA SSD system drive and SATA data drive had been set to POI 0 mode.

This is a very slow mode of disk access where the processor has to do a load of work.

Going back into the BIOS storage settings (a new venture) I changed both of these to Maximum DMA; rebooted; then in the windows 10 device manager making sure that the disk controller driver has DMA ticked.

Processor utilisation merrily chugs along most of the time under 10% and disk utilisation is down to single figures.

The system absolutely flies now and brings a new lease of life to some quality older kit.

I have a Dell 7400 machine with Intel Xeon X5450 3 GHz processors; it is running Windows 10 1607, 64 bit version.

Can't say the road going from Windows 7 to Windows 10 on it has been the smoothest experience; but it was possible on this particular machine; with a Xeon processor.

I do prefer Windows 7 however and on some days do wish I'd stayed with that installation on my computers instead.....  but onward and upward as they say......

There are many examples of Xeon processors running Windows 10, it is not as simple as saying the processor class is not compatible.

Windows 10 x64 has specific requirements of the CPU, these are CMPXCHG16b, PrefetchW, and LAHF/SAHF. These are predominantly dependent on the production age so it is entirely possible a Celeron is OK yet a Xeon is not