Forum Discussion
Disabling App Creation Page (appregnew.aspx)
robcaretta Try using this SharePoint PowerShell:
Set-SPOTenant - DisableCustomAppAuthentication $trueDocumentation: Set-SPOTenant
Check this article which will be helpful for additional information: Azure App, ACS, SP-App only and Disable Custom App Authentication
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robcaretta Try using this SharePoint PowerShell:
Set-SPOTenant - DisableCustomAppAuthentication $true
Documentation: Set-SPOTenant
Check this article which will be helpful for additional information: Azure App, ACS, SP-App only and Disable Custom App Authentication
Please click Mark as Best Response & Like if my post helped you to solve your issue. This will help others to find the correct solution easily. It also closes the item. If the post was useful in other ways, please consider giving it Like.
ganeshsanap Do you know if the disabling of this takes some time? After setting this to true, does it need time to propagate through the tenant? Setting this to true on the tenant still allowed the ability to get to the page _layouts/15/AppRegNew.aspx and generate a SharePoint app-only (legacy) registration. Are there any other settings in conjunction with this setting that might need to be set as well?