This blog will help you to retrieve all the subsites under Site Collections in SharePoint Online, using PowerShell. Method.

Steps
  1. Open SharePoint Management Shell.
  2. Copy the code given below and paste it.
  3. Run the code.
  1. ##########################
  3. #Script : Below Script will Get All SubSites under the Site Collections in Office 365 SharePoint Online
  4. #Author : Gowtham Rajamanickam
  5. #Date :16-03-2017
  6. #Version:1.0
  8. #########################
  10. #Before Run the Scritp you must load the Client Assembly files
  12. Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
  13. Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
  18. $UserName= "[email protected]"
  19. $Password = "Enter your Password here"
  21. $Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName,(ConvertTo-SecureString $Password -AsPlainText -Force))
  23. #Get the Root Web
  24. Function Get-Subsites() {
  27. $webURL="https://gowthamr.sharepoint.com/"
  28. $Context = New-Object Microsoft.SharePoint.Client.ClientContext($webURL)
  29. $Context.Credentials = $credentials
  30. $Web = $context.Web
  31. $Context.Load($web)
  32. $Context.Load($web.Webs)
  33. $Context.executeQuery()
  34. Write-host $Web.URL
  35. foreach ($Subweb in $web.Webs)
  36. {
  37. Write-host $Subweb.url
  38. }
  39. }
  41. #Call the function
  42. Get-SubSites
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