Tip: Getting the normal domain username from the claims username in SharePoint 2013

This article addresses the common issue in SharePoint 2013 where usernames appear as claims-encoded strings (e.g., POINTBIRD\tobiaszimmergren) instead of the traditional DOMAIN\username format. It explains why claims encoding is used and provides a code snippet using the SPClaimProviderManager class's built-in methods (IsEncodedClaim and ConvertClaimToIdentifier) to safely convert claims usernames back to normal domain usernames. The author warns against manual string parsing and recommends using the API for reliability. The article is a technical tip for developers working with SharePoint 2013 upgrades or custom code.