Upgrade SharePoint 2010 classic mode web application to SharePoint 2013 claims mode using PowerShell commands

While working with SharePoint 2010 to 2013 migration I have to migrate SharePoint 2010 classic mode 2013 claims mode because we don’t have classic mode in SharePoint 2013. To do that I have upgraded SharePoint 2010 site to use claims mode authentication using PowerShell commands and restored the DB in SP 2013 server.

Now I ran: Test-SPContentDatabase” command to check the upgrade status. I got an error saying that there is inconsistency between the authentication modes. So I have reverted the claims mode authentication web app to classic mode and created a Web application in SharePoint 2013 using classic mode using following command

New-SPWebApplication -Name "Web application name" -ApplicationPool " Web application AppPool" -AuthenticationMethod "NTLM" -ApplicationPoolAccount (Get-SPManagedAccount "Application Pool account") -Port Port Number -URL "URL of the web application"

Now I took the classic mode SP 2010 web application backup and restored in SP 2013 web application. By running “Test-SPContentDatabase” command I got no issues. Now mount the database using “Mount-SPContentDatabase” command

Mount-SPContentDatabase ContentDB Name -DatabaseServer DBServerName -WebApplication Web Application URL

Finally we have to convert the web application from classic mode to claimant mode by using “Convert-SPWebApplication” command

Convert-SPWebApplication -Identity "WebApp URL" -To Claims –RetainPermissions -Force

"Microsoft.SharePoint.Administration.SPUpdatedConcurrencyException", SharePoint exception after applying cumulative update\service pack

After applying a cumulative update on one of my SharePoint server, tried to run configuration file using psconfig.exe -cmd upgrade -inplace b2b -wait -force command, i got an error saying that "Exception: Microsoft.SharePoint.Administration.SPUpdatedConcurrencyException: An upgrade conflict has occurred and you must re-try this action"

We can fix this exception by setting line-update-running property to true. To do that Open command prompt with administrator privileges and navigate to bin folder (C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\Bin) and execute following command

stsadm -o setproperty -pn command-line-upgrade-running -pv Yes

By running this command on SharePoint server, it will reset the command-line-upgrade-running property. We need to execute this command on all the SharePoint servers in the farm after upgrading. Once we are done with running this command, we have to run config command as

psconfig.exe -cmd upgrade -inplace b2b –wait –force