Need to see if your shared folder is taking up space on your dropbox 👨‍💻? Find out how to check here.

Forum Discussion

AGreenTejada's avatar
AGreenTejada
Helpful | Level 5
7 years ago

C# ProcessCodeFlowAsync() invalid_grant error

Hello everyone, I'm a year young to C# and brand new to the concept of API's. Been having sometime struggling with the OAuth process using the OAuth2Helper class. While I already have the AppKey ...
API
AGreenTejada's avatar
AGreenTejada
Helpful | Level 5
7 years ago

Hey all,

Alright, I think I just solved my own problem. Since I was testing ProcessCodeFlow() using try/catch, I couldn't use the same auth code twice in the same process. Eliminating that loop allowed me to change the access code.

Greg-DB's avatar
Greg-DB
Icon for Dropbox Community Moderator rankDropbox Community Moderator
7 years ago

Thanks for following up. I'm glad to hear you already sorted this out. Yes, the Dropbox API OAuth 2 authorization codes can only be used once each. 

About Dropbox API Support & Feedback

Node avatar for Dropbox API Support & Feedback
Find help with the Dropbox API from other developers.

The Dropbox Community team is active from Monday to Friday. We try to respond to you as soon as we can, usually within 2 hours.

If you need more help you can view your support options (expected response time for an email or ticket is 24 hours), or contact us on X, Facebook or Instagram.

For more info on available support options for your Dropbox plan, see this article.

If you found the answer to your question in this Community thread, please 'like' the post to say thanks and to let us know it was useful!