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gagsbh's avatar
gagsbh
Helpful | Level 5
2 years ago
Solved

Invalid_Grant whlie generating Access Token using saved Refresh token in Dropbox Sign .NET SDK

Hello Greg-DB ,   I am using the following Dropbox Sign .NET SDK code in my project to generate Dropbox Sign Access token using previously saved Refresh token.    public async Task<TokenRes...
  • Spencer H's avatar
    2 years ago

    [Cross-linking for reference: https://stackoverflow.com/questions/78296262/why-am-i-getting-invalid-grant-error-while-using-refresh-token-to-generate-acces ]

     

    Hi Gagan,

    Thank you for reaching out, it looks like you are receiving an invalid_grant error. This error typically occurs when using a stored refresh token and one of the following is true: 

     - Scopes for the OAuth API app have changed

     - The user revoked authorization to the OAuth API app
     - The OAuth API app is approved multiple times by the same user—this will cause the previous authorization to reset and a new refresh token to be generated.

    If any of these actions have occurred, please try completing the authorization process again for the user to generate a new access_token and refresh_token. Try using the new refresh_token to generate any new access_token after the initial access_token expires. Please see our OAuth Walkthrough documentation for more details.

    If the issue persists, please submit a support request, along with the code snippet you just provided, so we can further assist you in determining why that error is being thrown. Thanks!

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