SharePoint Online: Create a Folder using PowerShell

#Variables for Processing
$SiteUrl = "https://crescent.sharepoint.com/sites/marketing"
$ListURL="/sites/marketing/Shared Documents"
$FolderName="Reports"
$UserName="[email protected]"
$Password ="password goes here"
 
#Setup Credentials to connect
$Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName,(ConvertTo-SecureString $Password -AsPlainText -Force))

Try { 
    #Set up the context
    $Context = New-Object Microsoft.SharePoint.Client.ClientContext($SiteUrl) 
    $Context.Credentials = $credentials
  
    #Get the List Root Folder
    $ParentFolder=$Context.web.GetFolderByServerRelativeUrl($ListURL)

    #sharepoint online powershell create folder
    $Folder = $ParentFolder.Folders.Add($FolderName)
    $ParentFolder.Context.ExecuteQuery()

    Write-host "New Folder Created Successfully!" -ForegroundColor Green
}
catch {
    write-host "Error: $($_.Exception.Message)" -foregroundcolor Red
} 

    
#Set up the context
$Context = New-Object Microsoft.SharePoint.Client.ClientContext($SiteUrl) 
$Context.Credentials = $credentials

#sharepoint online powershell create folder in document library
$Folder=$Context.Web.Folders.Add("Shared Documents/Reports/V2")
$Context.ExecuteQuery()

Write-host "Folder Created at: " $Folder.ServerRelativeUrl -ForegroundColor Green

#Load SharePoint CSOM Assemblies
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
 
Function Create-Folder()
{
    param(
        [Parameter(Mandatory=$true)][string]$SiteURL,
        [Parameter(Mandatory=$false)][System.Management.Automation.PSCredential] $Cred,
        [Parameter(Mandatory=$true)][string]$LibraryName,
        [Parameter(Mandatory=$true)][string]$FolderName
    )

    Try {
        $Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password)

        #Setup the context
        $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
        $Ctx.Credentials = $Credentials

        #Get the Library by Name
        $List = $Ctx.Web.Lists.GetByTitle($LibraryName)

        #Check Folder Exists already
        $Folders = $List.RootFolder.Folders
        $Ctx.Load($Folders)
        $Ctx.ExecuteQuery()

        #Get existing folder names
        $FolderNames = $Folders | Select -ExpandProperty Name
        if($FolderNames -contains $FolderName)
        {
            write-host "Folder Exists Already!" -ForegroundColor Yellow
        }
        else #powershell sharepoint online create folder if not exist
        {
            #sharepoint online create folder powershell
            $NewFolder = $List.RootFolder.Folders.Add($FolderName)
            $Ctx.ExecuteQuery()
            Write-host "Folder '$FolderName' Created Successfully!" -ForegroundColor Green
        }
    }
    Catch {
        write-host -f Red "Error Creating Folder!" $_.Exception.Message
    }
}

#Call the function to delete list view
Create-Folder -SiteURL "https://crescent.sharepoint.com" -Cred (Get-Credential) -LibraryName "Project Documents" -FolderName "Active"

#Config Variables
$SiteURL = "https://crescenttech.sharepoint.com"
$FolderName= "Team Projects"
$SiteRelativeURL= "/Shared Documents" #Site Relative URL of the Parent Folder

#Get Credentials to connect
$Cred = Get-Credential

Try {
    #Connect to PnP Online
    Connect-PnPOnline -Url $SiteURL -Credentials $Cred
    
    #sharepoint online create folder powershell
    Add-PnPFolder -Name $FolderName -Folder $SiteRelativeURL -ErrorAction Stop
    Write-host -f Green "New Folder '$FolderName' Added!"
}
catch {
    write-host "Error: $($_.Exception.Message)" -foregroundcolor Red
}

#Set Parameters
$SiteURL = "https://crescent.sharepoint.com/sites/marketing"
$FolderURL = "Project Documents/2018"

#Connect to PNP Online
Connect-PnPOnline -Url $SiteURL -Credentials (Get-Credential)

#Create Folder if it doesn't exist
Resolve-PnPFolder -SiteRelativePath $FolderURL