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Microsoft
commented on reports that customers that have not validated or using counterfeit software is not

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getting security updates. They said genuine and non-genuine customers are getting security updates.
However, not all updates are available for everyone. People with non-genuine copy of Windows or Office will not be able to download and install software that requires validation. If you will visit Microsoft Download Center website and notice this image
, it means validation is required before you can download or install the software.
If you manage to get the software from other sources, you can’t escape the validation tool because the installer will try to validate the copy of Windows. The screenshots at both side are examples of validation requirement before you can install Windows Defender and Windows SteadyState software by Microsoft.
Some people opted to disable Automatic Updates in Windows to avoid installing the Genuine Advantage tool and Genuine Notification Tool because Microsoft usually update the tool. Avoiding the updated validation should work but if Microsoft requires you to install the latest version, you have no choice anyway but to validate again so you can enjoy the latest version of the tool that have fixes and improvement. Other people is using third party Software Updates tool like Shavlik Patch Management tool called NetChk Protect but you still need to validate Windows when installing software that requires validation.
Note that Genuine Notification (WGAN) tool is not the same as the Validation (WGA) tool. The notification tool is optional unlike Validation tool.