My SharePoint Technical Experience

People Picker dialogue is blank / Choose folder dialogue under upload documents is blank Resolution : This is because of the SQL Injection rules in the IIS site. Follow the below steps to fix the issue: Go to IIS Manager (inetmgr) Expand the Sites-> Select the Migration farm URL In the right side pane-> double click on "Request Filtering" Under the rules tab -> Remove the  rule for SQL injection Do the same on the extended site and as well on all the WFE servers in the farm Hope this helps someone.

The below links may help for migration/upgrade of SharePoint environment, http://community.rightpoint.com/blogs/viewpoint/archive/2015/03/29/create-and-compare-a-source-and-target-site-inventory-using-powershell.aspx http://www.sharepointpals.com/post/Activities-to-be-performed-before-Upgrade-Migrate-from-SharePoint-2010-to-SharePoint-2013 Upgrade Worksheet from MS-  http://www.microsoft.com/en-us/download/details.aspx?id=30370