mName = membershipprovideraliasinCentralAdmin
accountname = account in Active Directory
- You would need to run a PowerShell command for the –Web parameter being the SiteCollection URL.
- You would need to login to that Site Collection at least once for the script to update the Display Name. This is something like alerts on a site will work for the user if we would have logged into that site collection at least once.
Set-SPUser “i:0#.f|mName|accountname” -Web http://sp2010/ -DisplayName "User Name"