I found so many solution like replacing the display name of the user manually using PowerShell script Set-SPuser -identity "User name" -DisplayName "Display Name" -web Web url.

Since I have more than 1000 user in my site, is there any better way to alter the display name of the user than this?

  • You may run a loop over 1000 users and update their DisplayName to be "username".
    – Mark L
    Oct 9 '15 at 8:50

Check out this thread: What are the claims supported by SharePoint?

Relevant info:

If you want to populate the email, display name, etc, in My Settings, configure the User Profile Sync service. Note: there are some additional steps to perform when you use claims-based auth, such as setting the "Claim User Identifier" property.

PS. If you want to see your claims, the code accompanying the following article has a really nice web part that shows all claims with their values: http://msdn.microsoft.com/en-us/library/ff953202.aspx

Credit to: Matthieu

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