migration error for one site collection after using DB method (2010 to 2016)

Question

migration error for one site collection after using DB method (2010 to 2016). PFA below information captured from the logs.
Please let me know what to do

Answer 1

Hi @sns ,

The first thing you need to be aware of if you are planning an upgrade from SharePoint 2010 to SharePoint 2016, is that there are no direct upgrade path: you will have to upgrade your SharePoint 2010 content databases to SharePoint 2013 before going to SharePoint 2016.

Please note, Site collections provisioned in backward compatible SharePoint 2010 (14) mode, must be upgraded to 2013 prior to upgrading to SharePoint Server 2016.

If you try to upgrade a SharePoint 2013 content database that contains site collections with the SharePoint 2010 experience to SharePoint 2016 the upgrade operation will fail and you will get the following error in the upgrade logs: ERROR Please upgrade sites using SharePoint 2010 experience in database Intranet-Content-1 to SharePoint 2013 before proceeding..

Thanks,
Echo Du

====================
Updated Answer =====================

Hi @sns ,

This log means that when executing "Custom Upgrade Action. V14 to V15 Upgrade", the upgrade "Rating" function throws an exception.

Please execute the following Powershell script as an administrator:

#upgrade the experience to SharePoint 2013  
Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue  
  
$webApps = Get-SPWebApplication  
foreach($webApp in $webApps)  
{  
    $sites = $webApp.Sites  
    foreach($site in $sites)  
    {  
        Upgrade-SPSite $site.RootWeb.Url -VersionUpgrade -Unthrottled  
        $site.Dispose()  
    }  
}  

Thanks,
Echo Du

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