"You may have pressed the back button" error using the Line connection

Problem statement

We received the below error when using the Line connection upon redirection from Line.

"You may have pressed the back button, refreshed during login, opened too many login dialogs, or there is some issue with cookies, since we couldn't find your session."


  • Line application installed on the device that started the login transaction.
  • Getting an error upon logging in with the Line connection on an iOS app.
  • Login works from a web browser when the Line app is not installed.

Steps to reproduce

  • Enable Line connection for an iOS app.
  • Install a Line application on the device.
  • Login through the app, and notice the error when redirected back from the Line app.


This is a current limitation of the ULP specific to Line. We have a backlog item to track this issue. The expected delivery timeline is not available yet. I will keep you updated once it’s available.

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