Visual Upgrade all Webs in Site Collection with Powershell

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While upgrading to SharePoint 2010, if you have chosen not to upgrade to the new user experience at upgrade time, you can upgrade all webs in a site collection after-the-fact with the following script:

Add-PSSnapin Microsoft.SharePoint.PowerShell

$site = Get-SPSite(”http://SiteCollectionURL“)
foreach ($web in $site.AllWebs) { $web.UIVersion = 4; $web.Update() }


  1. Unfortunately it looks like this script only puts the sites into the Preview mode of the visual upgrade, and doesn’t change them all the way over.

    1. Hi SP Admin,

      Its been a while since I’ve done this, but when I look back thru my reference notes, it appears that it should work. Unfortunately, I don’t have a new SP2010 environment upgraded from SP2007 to test.

      There is also a VisualUpgradeWebs() method on a site collection object you can try as well that will upgrade all webs in the site.


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