Hi @Lee Thacker ,
You could configure the new tab page using Group policy or Registry key. Please refer to NewTabPageLocation policy to configure it and note that This policy is available only on Windows instances that are joined to a Microsoft Active Directory domain, joined to Microsoft Azure Active Directory, or instances that enrolled for device management.
And then go to "edge://policy" page to check if it is successfully configured.
The Blank page will be like as below when you open a new tab:
Alternatively, you could also customize the new page layouts.
On the New Tab Page in Edge, there are few settings available that you can turn off to achieve this. Then you will get a new page just with the Microsoft logo and Bing Search box.
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Best Regards,
Raina Zhao