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SharePoint Online: Delete All List Items using PowerShell

Requirement: SharePoint Online PowerShell to Delete List items
We've a list in SharePoint online - Office 365 site with bunch of items. Need them to be deleted in bulk rather deleting one by one from SharePoint web UI.
delete all list items in sharepoint online using powershell

Delete List Items in SharePoint Online using PowerShell:
Here is the script to delete all list items in SharePoint online Office 365 using client side object model (CSOM) with PowerShell.
#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"
  
#Variables for Processing
$SiteUrl = "https://crescent.sharepoint.com/"
$ListName="Projects"

$UserName="admin@crescent.com
$Password ="Password goes here"
 
#Setup Credentials to connect
$Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName,(ConvertTo-SecureString $Password -AsPlainText -Force))
 
#Set up the context
$Context = New-Object Microsoft.SharePoint.Client.ClientContext($SiteUrl) 
$Context.Credentials = $credentials
  
#Get the List
$List = $Context.web.Lists.GetByTitle($ListName)
$ListItems = $List.GetItems([Microsoft.SharePoint.Client.CamlQuery]::CreateAllItemsQuery()) 
$Context.Load($ListItems)
$Context.ExecuteQuery()       

write-host "Total Number of List Items found:"$ListItems.Count

    #sharepoint online powershell delete all list items
    if ($ListItems.Count -gt 0)
    {
        #Loop through each item and delete
        For ($i = $ListItems.Count-1; $i -ge 0; $i--)
        {
            $ListItems[$i].DeleteObject()
        } 
        $Context.ExecuteQuery()
        
        Write-Host "All List Items deleted Successfully!"
    }
 
This PowerShell script deletes all list items. Please note, these items are not moved to the Recycle Bin but deleted permanently! This PowerShell script could be quite helpful when dealing with deleting bulk items from a huge list.

PowerShell to Delete All Items from Large Lists in SharePoint Online
When you have a SharePoint Online list or library with larger number of items (>5000), You may face "The attempted operation is prohibited because it exceeds the list view threshold enforced by the administrator." error. So, to mitigate this issue, lets delete list items in batch. Here is my PowerShell script to delete list items in batch.
#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"
   
#Config Parameters
$SiteURL= "https://crescent.sharepoint.com/"
$ListName="Projects"
$BatchSize = 500
 
#Setup Credentials to connect
$Cred = Get-Credential
$Cred = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.UserName,$Cred.Password)
 
Try {
    #Setup the context
    $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
    $Ctx.Credentials = $Cred
 
    #Get the web and List
    $Web=$Ctx.Web
    $List=$web.Lists.GetByTitle($ListName)
    $Ctx.Load($List)
    $Ctx.ExecuteQuery()
    Write-host "Total Number of Items Found in the List:"$List.ItemCount

    Do {  
        #Get all items from the list
        $Query = New-Object Microsoft.SharePoint.Client.CamlQuery
        $Query.ViewXml = "<View><RowLimit>$BatchSize</RowLimit></View>"
        $ListItems = $List.GetItems($Query)
        $Ctx.Load($ListItems)
        $Ctx.ExecuteQuery()
        
        #Exit from Loop if No items found
        If($ListItems.count -eq 0) { Break; }

        Write-host Deleting $($ListItems.count) Items from the List...

        #Loop through each item and delete
        ForEach($Item in $ListItems)
        {
            $List.GetItemById($Item.Id).DeleteObject()
        } 
        $Ctx.ExecuteQuery()

    } While ($True)

    Write-host -f Green "All Items Deleted!"
}
Catch {
    write-host -f Red "Error Deleting List Items!" $_.Exception.Message
} 
SharePoint Online: Delete All List Items using PowerShell SharePoint Online: Delete All List Items using PowerShell Reviewed by Salaudeen Rajack on October 23, 2015 Rating: 5

4 comments:

  1. Hi
    Great article really helped. When running the script it gave an error when the list items are greater than 5000. Any idea how we can overcome this?

    ReplyDelete
  2. How do I delete all Files (Not Folders)?

    ReplyDelete
    Replies
    1. Add an If condition:
      If($ListItem.FileSystemObjectType -eq "File")
      {
      #Delete the Item
      }

      Delete

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