# Error when joining friend: “you are not allowed to connect, either this or the other game instance is untrusted by the anti cheat system”

**URL:** <https://forums.fatsharkgames.com/t/error-when-joining-friend-you-are-not-allowed-to-connect-either-this-or-the-other-game-instance-is-untrusted-by-the-anti-cheat-system/49225>\
**Category:** Technical Support\
**Tags:** acknowledged\
**Created:** [July 15, 2022, 3:55am UTC](https://forums.fatsharkgames.com/t/error-when-joining-friend-you-are-not-allowed-to-connect-either-this-or-the-other-game-instance-is-untrusted-by-the-anti-cheat-system/49225 "2022-07-15T03:55:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![AkiR](https://avatars.discourse-cdn.com/v4/letter/a/dfb087/32.png) [@AkiR](https://forums.fatsharkgames.com/u/AkiR)\
**Post date:** [July 15, 2022, 3:55am UTC](https://forums.fatsharkgames.com/t/error-when-joining-friend-you-are-not-allowed-to-connect-either-this-or-the-other-game-instance-is-untrusted-by-the-anti-cheat-system/49225/1 "2022-07-15T03:55:19Z")

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This started happening a few minutes ago during a Chaos Wastes run. Was working fine the previous runs, now i get kicked out of my friend’s lobby every time i restart and reconnect.

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**Author:** ![FatsharkJulia](https://dub1.discourse-cdn.com/flex013/user_avatar/forums.fatsharkgames.com/fatsharkjulia/32/11653_2.png) [@FatsharkJulia](https://forums.fatsharkgames.com/u/FatsharkJulia)\
**Post date:** [July 15, 2022, 3:31pm UTC](https://forums.fatsharkgames.com/t/error-when-joining-friend-you-are-not-allowed-to-connect-either-this-or-the-other-game-instance-is-untrusted-by-the-anti-cheat-system/49225/2 "2022-07-15T15:31:53Z")

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Hello! The solutions listed here should help with this issue: [https://support.fatshark.se/hc/en-us/articles/360033298334--PC-Observing-a-BACKEND-REJECTED-THE-CHALLENGE-RESPONSE-Error-OR-Unable-to-Connect-to-Others-Craft-or-Open-Spoils-of-War-](https://support.fatshark.se/hc/en-us/articles/360033298334--PC-Observing-a-BACKEND-REJECTED-THE-CHALLENGE-RESPONSE-Error-OR-Unable-to-Connect-to-Others-Craft-or-Open-Spoils-of-War-)

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**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/fatshark/original/3X/3/1/319a2f41b73f03a4d9360defbe43058888a33c8c.png) [@system](https://forums.fatsharkgames.com/u/system)\
**Post date:** [July 22, 2022, 3:31pm UTC](https://forums.fatsharkgames.com/t/error-when-joining-friend-you-are-not-allowed-to-connect-either-this-or-the-other-game-instance-is-untrusted-by-the-anti-cheat-system/49225/3 "2022-07-22T15:31:56Z")

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Closed on July 22, 2022, 3:31pm UTC

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