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    <title>topic Re: {&amp;quot;error&amp;quot;: &amp;quot;invalid_grant&amp;quot;, &amp;quot;error_description&amp;quot;: &amp;quot;refresh toke in Discuss Dropbox Developer &amp; API</title>
    <link>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/quot-error-quot-quot-invalid-grant-quot-quot-error-description/m-p/712745#M3601</link>
    <description>&lt;P&gt;ok I could get the resolution.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;The code which i was getting with offline mode i needed to use once for getting refresh token.&amp;nbsp; using&amp;nbsp;&lt;SPAN&gt;&lt;A href="https://api.dropbox.com/oauth2/token" target="_blank"&gt;https://api.dropbox.com/oauth2/token&lt;/A&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;once i got refresh token now i can regenerate access_token multiple times.&amp;nbsp;&lt;/P&gt;</description>
    <pubDate>Mon, 11 Sep 2023 07:16:28 GMT</pubDate>
    <dc:creator>RupeshShah</dc:creator>
    <dc:date>2023-09-11T07:16:28Z</dc:date>
    <item>
      <title>{"error": "invalid_grant", "error_description": "refresh token is malformed"}</title>
      <link>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/quot-error-quot-quot-invalid-grant-quot-quot-error-description/m-p/712728#M3599</link>
      <description>&lt;P&gt;I am taking refresh_token from Access code generated offline.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;I am able to get with refresh_token from the access code generated earlier.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Now i have modified permission so i generated new access code , however with new access code i getting the following error&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;{"error": "invalid_grant", "error_description": "refresh token is malformed"}&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;where am i making mistake ?&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;access code&amp;nbsp; length i got earlier ( which is still working)&amp;nbsp; is 64 characters&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Where as new access code length is only 43 characters&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Request please help.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Mon, 11 Sep 2023 05:46:34 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/quot-error-quot-quot-invalid-grant-quot-quot-error-description/m-p/712728#M3599</guid>
      <dc:creator>RupeshShah</dc:creator>
      <dc:date>2023-09-11T05:46:34Z</dc:date>
    </item>
    <item>
      <title>Re: {"error": "invalid_grant", "error_description": "refresh toke</title>
      <link>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/quot-error-quot-quot-invalid-grant-quot-quot-error-description/m-p/712733#M3600</link>
      <description>&lt;P&gt;I am using this in vb.net with restapi&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Dim link1 As String = "&lt;A href="https://api.dropbox.com/oauth2/token" target="_blank"&gt;https://api.dropbox.com/oauth2/token&lt;/A&gt;"&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Dim client = New RestClient(link1)&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; client.Timeout = -1&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; mToken = ""&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Dim request = New RestRequest(Method.[POST])&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;request.AddHeader("Content-Type", "application/x-www-form-urlencoded")&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; request.AddParameter("refresh_token", "UF2xaUcddPOfkhAAAAyAAAIT0EEMOQHza-Gemg5atvn")&amp;nbsp; -- token changed&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; request.AddParameter("grant_type", "refresh_token")&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; request.AddParameter("client_id", "xxxxxxx")&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; request.AddParameter("client_secret", "vvvvvvvv")&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Dim response As IRestResponse = client.Execute(request)&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Console.WriteLine(response.Content)&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Dim xmld As String&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; xmld = response.Content&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Dim jsonString As String = xmld&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; Dim jsonDynamic As Object = JsonConvert.DeserializeObject(jsonString)&lt;/P&gt;&lt;P&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; fieldValue = jsonDynamic("access_token").ToString() ' Replace "fieldName" with the actual field name you want to access&lt;/P&gt;</description>
      <pubDate>Mon, 11 Sep 2023 06:01:18 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/quot-error-quot-quot-invalid-grant-quot-quot-error-description/m-p/712733#M3600</guid>
      <dc:creator>RupeshShah</dc:creator>
      <dc:date>2023-09-11T06:01:18Z</dc:date>
    </item>
    <item>
      <title>Re: {"error": "invalid_grant", "error_description": "refresh toke</title>
      <link>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/quot-error-quot-quot-invalid-grant-quot-quot-error-description/m-p/712745#M3601</link>
      <description>&lt;P&gt;ok I could get the resolution.&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;The code which i was getting with offline mode i needed to use once for getting refresh token.&amp;nbsp; using&amp;nbsp;&lt;SPAN&gt;&lt;A href="https://api.dropbox.com/oauth2/token" target="_blank"&gt;https://api.dropbox.com/oauth2/token&lt;/A&gt;&lt;/SPAN&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;once i got refresh token now i can regenerate access_token multiple times.&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Mon, 11 Sep 2023 07:16:28 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Discuss-Dropbox-Developer-API/quot-error-quot-quot-invalid-grant-quot-quot-error-description/m-p/712745#M3601</guid>
      <dc:creator>RupeshShah</dc:creator>
      <dc:date>2023-09-11T07:16:28Z</dc:date>
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