# IOS Facebook Auth or link **URL:** \ **Category:** Local Setup\ **Created:** [July 16, 2025, 11:01am UTC](https://forum.heroiclabs.com/t/ios-facebook-auth-or-link/6319 "2025-07-16T11:01:10Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![developerdinno](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.heroiclabs.com/developerdinno/32/2100_2.png) [@developerdinno](https://forum.heroiclabs.com/u/developerdinno)\ **Post date:** [July 16, 2025, 11:01am UTC](https://forum.heroiclabs.com/t/ios-facebook-auth-or-link/6319/1 "2025-07-16T11:01:10Z")
Here im trying to implement Facebook auth or link into the iOS. `Invalid: Oauth access token - Cannot parse access token ......` Here im using unity SDK FB 17.0 and FROM [registry.heroiclabs.com/heroiclabs/nakama:3.27.1](http://registry.heroiclabs.com/heroiclabs/nakama:3.27.1) nakama-runtime: “1.37.0” Please suggest any solution or guide; I’m stuck on the issue. ---
**Author:** ![sesposito](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.heroiclabs.com/sesposito/32/2594_2.png) [@sesposito](https://forum.heroiclabs.com/u/sesposito)\ **Post date:** [July 16, 2025, 12:33pm UTC](https://forum.heroiclabs.com/t/ios-facebook-auth-or-link/6319/2 "2025-07-16T12:33:25Z")
Have a look here to see if this helps: [Authentication - Heroic Labs Documentation](https://heroiclabs.com/docs/nakama/tutorials/unity/pirate-panic/authentication/#facebook-authentication) ---
**Author:** ![developerdinno](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.heroiclabs.com/developerdinno/32/2100_2.png) [@developerdinno](https://forum.heroiclabs.com/u/developerdinno)\ **Post date:** [July 17, 2025, 8:21am UTC](https://forum.heroiclabs.com/t/ios-facebook-auth-or-link/6319/3 "2025-07-17T08:21:01Z")
Thank you for your reply. I’m trying to implement it; if there is any issue, I will ask you