PieSync Help Center

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Why am I seeing "Authentication failed"?

Jonas Rasschaert

In this case, the connected app is denying access to PieSync, because of any number of reasons:

  • A time-out after a prolonged period of inactivity
  • The account's password was changed
  • The account no longer exists, or had its changed;
  • The account no longer fits the required conditions, e.g. as a consequence of a billing issue;
  • ... or somewhere along those lines.

Specifically, changes to the account credentials (e.g. changing the password) may be a deliberate safety measure, but naturally, this will prevent PieSync from accessing the contact data any further.  Therefore, you need to re-authorize your app for PieSync to be able to read & write to it.

  1. The PieSync connections tab provides an overview of your connections. The ones that need attention will be presented on top.

  1. A dropdown list will appear after clicking the connection box, allowing you to reauthenticate the account.

Combined Shape

If this is not working, try to remove the connection completely and set up a new one.