While the 32-bit version is common, users running (2010 or later) require the NK2Edit 64-bit version to interact directly with the email address book. NK2Edit 64-Bit Download: Where to Find the Official Version
Note: The tool is free for personal use, but requires a commercial license for business use. How to Install and Use NK2Edit (Portable Version)
, developed by NirSoft, solves this by allowing you to: Add new entries manually. Remove invalid or unwanted email addresses. Edit displayed names, SMTP addresses, and Exchange strings. Merge multiple .NK2 files from different profiles.
This article provides a comprehensive guide on where to find the , how to install it, and how to use it to master your email contacts, especially for modern 64-bit Outlook environments. What is NK2Edit and Why Do You Need It?
MajorGeeks or PortableFreeware .