@Abdulkareem Salem Thanks for posting in our Q&A.
For this issue, it is not related to intune because the devices are not managed by intune. So, it doesn't need to use intune license. Based on my research, the following article describes the minimum requirements for Microsoft Defender for Endpoint:
https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/minimum-requirements?view=o365-worldwide
I'm not a support engineer of Microsoft Defender For Endpoints and know little about this product. To get more accurate help, it is suggested to contact Microsoft Defender for Endpoint support:
https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/contact-support?view=o365-worldwide
Thanks for your understanding.
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