Connect to SharePoint Online Using PowerShell

In this example, I’m connecting to a Site Collection on my tenant.

Assumptions:
1) You have created a token in your o365 site
1.1) https://portal.office.com/account/
1.2) On the left site of the page click Security & privacy, then click Create and manage app passwords
1.3) In the app password page click the create button and give it a name.
1.4) Save the password to a secure location.
1.5) There is a better way of doing this that I will cover in a future post.
2) You have downloaded to CSOM DLL(s) from Nuget

Clear-Host

$userName = "ihayse@sharepointed.com"
$pw = "abc123taco"
$siteCollectionUrl = "https://sharepointed.sharepoint.com/sites/taco"

#Secure the password
$securePassword = ConvertTo-SecureString $pw -AsPlainText -Force

Add-Type -Path "C:\Code\DLL\Microsoft.SharePoint.Client.dll"
Add-Type –Path "C:\Code\DLL\Microsoft.SharePoint.Client.Runtime.dll"

#Create a Context
$ctx = New-Object Microsoft.SharePoint.Client.ClientContext($siteCollectionUrl)

#Authorise
$ctx.Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($userName, $securePassword)

$web = $ctx.Web
$properties = $web.AllProperties
$ctx.Load($web)
$ctx.Load($properties)
$ctx.ExecuteQuery()

Write-Host " Site Collectione URL: $($web.Url)"
Write-Host "Properties are "

foreach ($prop in $properties) {
    $prop.FieldValues
}