Getting Error: redirect_uri_mismatch The redirect URI in the request: http://localhost:8080/oauth2callback did not match a registered redirect URI

Question

I\'m getting this error while trying to run my application...

The redirect URI in the request: http://localhost:8080/oauth2callback did not match a registere         


        

Answer 1

In main.py functions main class add (decorator.callback_path, decorator.callback_handler()), and remove

- url: /oauth2callback 
    script: oauth2client/appengine.py 

from app.yaml.

PS: You might get DownloadError if you have some proxy-configuration/webcontent-filter. If you disable these configurations or deploy it on Google Server, it will work just fine.