Is the Intel Core i9-9900K compatible with Windows 11?

Yes. The Intel Core i9-9900K is on Microsoft’s list of supported processors, so a PC with it can run Windows 11 as long as it also has TPM 2.0 and Secure Boot turned on.

Windows 11

Supported

Microsoft’s list includes 9th Generation Core i9 processors.

Generation

9th gen

Found in

Desktops

What to do next

Run Microsoft’s PC Health Check app to confirm the rest of your PC meets the requirements.
If it reports a TPM or Secure Boot problem, they’re usually just switched off. See how to enable TPM 2.0 and Secure Boot.
Then upgrade for free through Windows Update. Back up your files first.

Frequently asked questions

Is the Intel Core i9-9900K compatible with Windows 11?

Yes. The Intel Core i9-9900K is on Microsoft’s list of supported processors, so a PC with it can run Windows 11 as long as it also has TPM 2.0 and Secure Boot turned on. Microsoft’s list includes 9th Generation Core i9 processors.

What generation is the Intel Core i9-9900K?

It’s a 9th gen processor, found in desktops.

Is the Windows 11 upgrade free with the Intel Core i9-9900K?

Yes. Windows 10 PCs that meet the Windows 11 requirements can upgrade for free through Windows Update.

Other Intel Core 9th gen processors

i5-9400F i5-9600K i7-9700K i7-9750H

Check another processor

Based on Microsoft’s supported processor lists for Intel and AMD, last checked October 25, 2026. A PC also needs TPM 2.0 and Secure Boot, so confirm with Microsoft’s PC Health Check app.