Microsoft recently added new Modern Sites. These new sites take advantage of the new modern pages and other features. The only issue with these sites is that they have Custom Scripting turned off by default even if you have turned it on in your tenant settings. Custom Scripting needs to be turned on in order to install and use LiveTiles. Check out Prerequisites - LiveTiles SharePoint Installation for more information.

To enable Custom Scripting for Modern Sites to install and use LiveTiles on those sites, you can so by completing the following in Powershell:

Download and Install the SharePoint Online Management

Make sure that you are on a computer running Windows.
Go to this site.

Step one

Download and Install the SharePoint Online Management Shell.

The SharePoint Online Management Shell is used to connect to your SharePoint Online subscription via Powershell.

Step two

Open Powershell

Connect-SPOService

Step three

Enter URL for the SharePoint admin site: https://<yourdomain>-admin.sharepoint.com

Step four

Enter tenant admin username and password:

Step five

Type in the following command adding the URL of the Modern Site.

Set-SPOSite -Identity https://[yourtenant].sharepoint.com/[siteurl] -DenyAddAndCustomizePages 0

You can now install LiveTiles on Modern Sites!

Main Installation Guides

Prerequisites - LiveTiles SharePoint Installation
LiveTiles Design - LiveTiles SharePoint Installation
LiveTiles Build - LiveTiles SharePoint Installation
LiveTiles Blueprint - LiveTiles SharePoint Installation

Supporting Guides

Approving the LiveTiles Design Manager App
Office 365 Groups or Team Sites
On-Premise App Catalog Setup
Installing LiveTiles Design - Non-App Installation
Installing LiveTiles Design - Offline Installation

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