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Error 400 Session Invalid - How to solve??

  • March 9, 2025
  • 5 replies
  • 682 views

Swedishalexa

Hey, this is the first time Im using Manychat. I tried to connect my Instagram account but the screen gets fully black with an error text “400 session invalid”. I tried to connect my instagram account both from a PC and mobile but I still get the same error.

 

Does anyone know how to solve it?

5 replies

Gustavo Boregio
Forum|alt.badge.img+6
  • Manychat Community Moderator
  • 2821 replies
  • March 9, 2025

@Swedishalexa I'd start testing with a different browser or computer, or after cleaning cookies and history.

If after that you still have issues, I suggest you contact support.

https://help.manychat.com/hc/en-us/articles/14281086345244-How-to-get-support-from-Manychat


agentandreaaa
  • Up-and-Comer
  • 1 reply
  • April 10, 2025

Did you find a solution here? I am stuck in an endless loop trying to get this connected.


rm81
  • Up-and-Comer
  • 2 replies
  • May 1, 2025

I also have the same problem
I have tried everythink and it doesnt work


rodrigo_silvano
Forum|alt.badge.img+4
  • Manychat Community Moderator
  • 1001 replies
  • May 1, 2025

Hey, ​@agentandreaaa and ​@rm81 

Here’s a help article with a step-by-step to understand what could be causing this: https://help.manychat.com/hc/en-us/articles/14281291094428-Unable-to-connect-Instagram-to-Manychat#h_01J3510K09DFP141D5NYZJ5ZQT

 

Let me know if this helps 🙂


rm81
  • Up-and-Comer
  • 2 replies
  • May 2, 2025

Hi,
thank you for your reply. Unfortunately, it didn’t help – I’m still experiencing the same issue.
By the way, this is the only thing I can see in my Manychat account (see the screenshot).