Since the official servers are gone, you cannot download it from the original launcher. Community members often find it through:
Wildstar utilizes a proprietary archive format known as .index and .pack files. wildstar 16042 client
If you plan to help with reverse engineering, the 16042 client is valuable because its debugging symbols can be reconstructed using tools like IDA Pro with the WildStar64.pdb (if found). Since the official servers are gone, you cannot
: The full ~20-30GB game directory for version 16042. 💡 Where to Find Help Since the official servers are gone