Try it
  • Examples
  • Features
  • Testimonials
  • Partners
  • Pricing
  • Support
    • Apps Help
    • Apps Release History
    • BI Help
    • BI Release History
    • Forms Help
    • Forms Release History
    • How to video series
    • Ask the community
    • Submit a ticket
    • Request a demo
    • Compare us
  • Blog
  • Examples
  • Features
  • Testimonials
  • Partners
  • Pricing
  • Support
    • Apps Help
    • Apps Release History
    • BI Help
    • BI Release History
    • Forms Help
    • Forms Release History
    • How to video series
    • Ask the community
    • Submit a ticket
    • Request a demo
    • Compare us
    • For Schools
  • Blog
  • Get Started
How can we help?

Search for answers or browse articles about Sintel Apps

Filter by categories Clear Results
  • About Sintel Apps

    • What is Sintel Apps? (Product Overview)
    • Understanding the Underlying SharePoint List
  • Sintel Forms to Sintel Apps Migration

    • Sintel Forms Is Now Sintel Apps – What You Need to Do
    • Upgrading from Sintel Forms to Sintel Apps – Migration Guide
    • JavaScript API Differences Between Sintel Forms and Sintel Apps
    • Migrating Workflow History using a custom Microsoft Flow
    • What Does Not Migrate Automatically
    • Migration Checklist
    • Information for IT Administrators – Installing Sintel Apps
    • How to Find Existing Sintel Forms in SharePoint
    • Convert a classic SharePoint site to a modern one
  • Getting Started

    • Add Sintel Apps to Your Microsoft 365 Tenant
    • Configure Sintel Apps on a Site
    • Using Site Collection App Catalogs
  • Designer Overview

    • Sintel Apps Designer – Overview (Tour)
    • Layout Tab (Overview)
    • Workflow Tab (Overview)
    • Settings Tab (Overview)
    • Logic Tab: Create your First Rule (Overview)
  • Layout

    • Layout Tab (Overview)
    • Theme & Styling
    • Calculated Fields
    • Fields

      • Text Fields (All types explained)
      • Choice Fields (Dropdown vs Multi-Choice)
      • Lookup Fields
      • Person and Group Fields Posted
      • Number, Currency & Percentage Fields
      • Yes/No Field
      • Date & Date Time Fields
      • Hyperlink Field
      • Picture Fields
      • Related List
      • Related Library
      • Enhanced Rich Text Editor
    • Widgets

      • Attachments
      • HTML Widget
      • Workflow Status Widget
      • Workflow History Widget
      • Buttons
  • Logic

    • Logic Tab: Create your First Rule (Overview)
    • Understanding Conditions
    • Understanding Steps
    • The JavaScript API

      • Using the JavaScript API in Logic
  • Workflow

    • Workflow Tab (Overview)
    • How to Build Common Workflow Patterns in Sintel Apps
    • How to Configure Workflow Email Notifications
    • Actions

      • The Workflow Actions API Integration
      • Workflow Actions – Configuration and Settings
      • Configuring Power Automate Webhook
    • Statuses

      • Workflow Statuses – Configuration and Settings
  • Settings

    • Settings Tab (Overview)
    • PDF Export
    • Conversations
    • After save script
    • Confirmation Screens
    • License Information
    • Upgrade from Sintel Forms
    • Custom Emails
    • Form Viewer

      • Actions Menu Behavior
      • Enable Concurrent Access
      • After save/action redirect to
      • After close redirect to
    • External Access

      • External Access & Sharing
      • Configuring External Access Permissions
  • Product Updates

    • CSP Content Security Policies (CSP) Enforcement for SPFx Apps
    • Sintel Apps Content Delivery Network CDN
    • Release History
    • How to update Sintel Apps
  • Building Forms

    • How to Create a New List
  • End-to-End Examples

    • Articles coming soon
  • Checklists & Best Practices

    • Sintel Apps – Project Planning & Best Practices
    • Project Requirements Template
  • Advanced Configurations

    • The Workflow Actions API Integration
    • Using the JavaScript API in Logic
    • Configuring External Access Permissions
  • Troubleshooting

    • Failed to query permissions
    • Convert a classic SharePoint site to a modern one
  • Administration

    • Sintel Apps Email Delivery
< All Topics
You are here:
  • Main
  • Sintel Forms to Sintel Apps Migration
  • Convert a classic SharePoint site to a modern one

Convert a classic SharePoint site to a modern one

Posted19 March 2026
Updated19 March 2026
ByEoin McMahon
0 out of 5 stars
5 Stars 0%
4 Stars 0%
3 Stars 0%
2 Stars 0%
1 Stars 0%

 

Why do this

Sintel Apps and Sintel BI only work on modern SharePoint sites.

  1. If you have an existing classic site and you want to use our apps on it, you can convert it to a modern one.
  2. This is also useful if you’re using Sintel Forms on a classic site and you want to upgrade to Sintel Apps.
  3. Using this process you can upgrade from the classic experience to the modern one and then simply upgrade from Sintel Forms to Sintel Apps.

 

The process of converting a classic site to a modern one is straightforward and once you have one site upgraded it’s a rinse and repeat process for the remaining sites i.e.

  1. Connect to the site
  2. Upgrade it

 

 

Prerequisites

  1. Install PowerShell 7
  2. Setup PnP PowerShell with its own Entra ID Application
  3. Install the PnP.PowerShell module Install-Module PnP.PowerShell
  4. Register your own Entra ID Application-we used the automatic option detailed here: https://pnp.github.io/powershell/articles/registerapplication.html
    Register-PnPEntraIDAppForInteractiveLogin -ApplicationName “PnP.PowerShell” -Tenant [yourtenant].onmicrosoft.com

 

Steps to convert a site

  1. Launch PowerShell 7
  2. Run the following commands
    Connect-PnPOnline -Url “https://YourTenant.sharepoint.com/sites/YourSite” -ClientId “TheClientIdOfYourEntraIDAppFrom2bAbove” -Interactive
  3. This will launch a browser and prompt you to login and once you have you can close the page.
  4. Run Enable-PnPCommSite

 

Once the process completes, your site is now a modern one and you can add Sintel Apps and/or Sintel BI into it.

 

 

Possible Issues

  1. If the site collection publishing feature is enabled, you need to disable it prior to running the script.
  2. The process can sometimes timeout and you may receive a message like “The request was canceled due to the configured HttpClient.Timeout of 100 seconds elapsing.”-In this case just run the command again “Enable-PnPCommSite”

 

 

Notes

  1. The original home page, Home.aspx, remains but a new one Home(1).aspx is created and set as the homepage. If you wish you can set the original Home.aspx as the homepage.
Was this article helpful?
0 out of 5 stars
5 Stars 0%
4 Stars 0%
3 Stars 0%
2 Stars 0%
1 Stars 0%
5
Please Share Your Feedback
How Can We Improve This Article?
Table of Contents

Sintel Apps

Create apps on Microsoft 365 in minutes with no code.

Address

River House
Blackpool Park,
Cork, T23 R5TF,
Ireland

Support

  • Product help
  • Community site
  • Submit a ticket
  • Compare us

    Contact us to

    • Book a demo
    • Request a license
    • Become a partner

    e-mail: info@sintelapps.com
    tel: +353 (0) 21 245 2935

    Follow us

    • Follow
    • Follow
    • Follow

    © Copyright 2026 | End User License Agreement | Privacy Policy | Terms Of Use

    Sintel Apps
    Sintel Apps Assistant
    Get instant answers and support
    Connecting to Sintel Apps Assistant…
    Sintel is thinking…
    We use cookies to collect and analyse information about the users of this website. Please click 'I accept' to consent to the use of this technology.