Disable Modern Experience in SharePoint 2019

Question

How to remove the modern experience from SharePoint on-premise. Every time you see a sharepoint list, it appears in a modern User Interface UI. To go to the classic sharepoint UI, click the left-bottom button `Return to classic SharePoint`.

Is there a way to remove the modern experience from the entire site?

Answer 1

How to Disable Modern Experience in SharePoint 2019?

By running the script below, you can disable Modern UI on the SharePoint server at the Site Collection Level.

add-pssnapin Microsoft.SharePoint.PowerShell

$site = Get-SPSite {siteURL}

$featureGUID = New-Object System.Guid "E3540C7D-6BEA-403C-A224-1A12EAFEE4C4"
// Disable Modern Experience
$site.Features.Add($featureGUID, $true)

How to Enable Modern Experience in SharePoint 2019?

Run the same script for Enable Modern Experience, but remove the GUID from Features.

add-pssnapin Microsoft.SharePoint.PowerShell

$site = Get-SPSite {siteURL}

$featureGUID = New-Object System.Guid "E3540C7D-6BEA-403C-A224-1A12EAFEE4C4"

// Enable Modern Experience
$site.Features.Remove($featureGUID, $true)