How to download versions of a file in SharePoint site

Question

https://learn.microsoft.com/en-us/answers/questions/1083204/how-to-resume-older-file-version-download-in-share

The above link has a way to download the file versions but as the basic authentication is disabled, it is not possible to use "SPOIDCRL" cookie to get authenticated for the below URL:
"https://mysite.sharepoint.com/sites/test-site1/_vti_history/512/Shared%20Documents/txtDoc.txt"

Is there any other ways to download it.

Answer 1

Hi @Naveen Kumar B,

I would recommend you to use csom powershell to download different versions of file. Please refer to following script

#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"
   
#Parameters
$SiteURL = "https://Crescent.sharepoint.com"
$FileRelativeURL ="/Shared Documents/Discloser China.doc"
$DownloadPath= "C:\Temp"
 
#Get credentials to connect
$Cred = Get-Credential
 
#Setup the Context
$Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
$Ctx.Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.UserName, $Cred.Password)
  
#Get the File and its versions
$File = $Ctx.Web.GetFileByServerRelativeUrl($FileRelativeURL)
$Ctx.Load($File)
$Ctx.Load($File.Versions)
$Ctx.ExecuteQuery()
  
If($File.Versions.Count -gt 0)
{
    Foreach($Version in $File.Versions)
    {
        #Frame File Name for the Version
        $VersionFileName = "$($DownloadPath)\$($Version.VersionLabel)_$($File.Name)"
         
        #Get Contents of the File Version
        $VersionStream = $Version.OpenBinaryStream()
        $Ctx.ExecuteQuery()
 
        #Create File version at local disk
        [System.IO.FileStream] $FileStream = [System.IO.File]::Open($VersionFileName,[System.IO.FileMode]::OpenOrCreate)
        $VersionStream.Value.CopyTo($FileStream)
        $FileStream.Close()
         
        Write-Host -f Green "Version $($Version.VersionLabel) Downloaded to :" $VersionFileName
    }
}
Else
{
    Write-host "No Versions Available for "$Item["FileRef"] -f Yellow
}

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