The refresh token is invalid or expired.

0 Votes
I have requested the api call after the access token got expired and when i try to refresh the token to get new access token along with the new refresh token, i am getting error with status code 400 data: { error: 'invalid_grant', error_description: 'The refresh token is invalid or expired.' } could you pls help me out on this ASAP, we are waiting on this to integrate totally due to this we got struck at this junction. Thank You
0 Votes

Hello user422837,


Thank you for reaching out to Constant Contact API Developer Support. My team is here to assist outside software developers with questions about building into Constant Contact's API.


It looks like we've already followed up with you directly via email, but I wanted to close the loop here as well. If you haven't received our reply, please let us know via email at, and reference case number 31586423.


Please have a look and let us know if you have any other questions!



John B.
API Support Specialist
Did I answer your question? If so, please mark my post as an "Accepted Solution" by clicking the Accept as Solution button in the bottom right hand corner of this post.
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