Is the Intel Core i5-8600K compatible with Windows 11?

Yes. The Intel Core i5-8600K 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 8th Generation Core i5 processors.

Generation

8th 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 i5-8600K compatible with Windows 11?

Yes. The Intel Core i5-8600K 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 8th Generation Core i5 processors.

What generation is the Intel Core i5-8600K?

It’s a 8th gen processor, found in desktops.

Is the Windows 11 upgrade free with the Intel Core i5-8600K?

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

Other Intel Core 8th gen processors

i3-8130U i3-8145U i3-8100 i5-8250U i5-8265U i5-8350U i5-8365U i5-8400 i5-8500 i7-8550U i7-8565U i7-8650U i7-8665U i7-8750H i7-8700 i7-8700K

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.