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AshMSport's avatar
AshMSport
Copper Contributor
Aug 22, 2022

Copy-PnPFile Not Working Value cannot be null.\r\nParameter name: Null value for source item at

I'm tying to use Copy-PnPFile command to copy all files and folders from site collection A document library to another site collection B/folder but it's not working. Following is the command I'm usin...
PnP PowerShell
PowerShell
SharePoint Online
MarceloMendes's avatar
MarceloMendes
Copper Contributor
Apr 15, 2025

I've had the same issue and it turns out that you can use it for the root folder, but it contains a hidden forms folder that is the default folder MS uses for Microsoft Forms for that Sharepoint site. When copying at root folder level, you have to make sure you're excluding the forms folder like

$folder.name -ne "Forms"

AmityTechAus's avatar
AmityTechAus
Occasional Reader
May 21, 2026

I like the sound of this, but I can't figure out how to use your exclusion in the syntax for this command.

(Sorry, I'm brand new to Powershell, and just trying to use it for the first time to migrate some Sharepoint sites.)

For example, how would I incorporate $folder.name -ne "Forms" into the following example?

 

#Parameters

$SiteURL = "https://crescent.sharepoint.com/sites/Marketing"

$SourceFolderURL = "/sites/Marketing/Shared Documents"

$TargetFolderURL = "/sites/Purchase/Shared Documents"

 

#Connect to PnP Online

Connect-PnPOnline -Url $SiteURL -Interactive

 

#Copy All Files and Folders between source and target folders

Copy-PnPFile -SourceUrl $SourceFolderURL -TargetUrl $TargetFolderURL -Force -OverwriteIfAlreadyExists