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Logging in to a Linchpin instance with Linchpin Mobile via a QR code is not possible and results in an error.


There are several potential causes for this issue which we collect in the list below. If none of the causes / resolutions fit your issue please contact us via

  • Is the certificate chain (including intermediate certificates) for the Linchpin instance you're trying to connect to still valid?
  • You're using an unknown CA (self signed certificates).
  • Is it possible for Linchpin to resolve requests to itself (internal requests)?


Depending on the potential cause of this issue try the following options:

  • Make sure the certificate chain (including intermediate certificates) of your Linchpin instance is valid.
  • Make sure the self signed certificate is deployed to all mobile devices that need to establish a connection with your Linchpin.
  • Make sure Linchpin can resolve internal requests to itself correctly. Also check the additional information over at

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How to proceed if the connection test for Linchpin Mobile Gateway fails

Still need help?

If this solution doesn't work for you feel free to contact us via email or get in touch with us here.

This page was last edited on 02/10/2022.