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    <title>topic Re: Fail to load oauth2/authorize page in Dropbox API Support &amp; Feedback</title>
    <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149080#M4892</link>
    <description>&lt;P&gt;Hi&amp;nbsp;Fábio,&amp;nbsp;can you elaborate on the issue you're seeing? It sounds like you are properly seeing the error message on the /authorize page. OAuth 2 redirect URIs for the "code" flow do need to start with "https://", unless it's a localhost address.&lt;/P&gt;</description>
    <pubDate>Wed, 18 May 2016 00:54:37 GMT</pubDate>
    <dc:creator>Greg-DB</dc:creator>
    <dc:date>2016-05-18T00:54:37Z</dc:date>
    <item>
      <title>Fail to load oauth2/authorize page</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149076#M4888</link>
      <description>&lt;DIV&gt;According to API document, I tried to load authorization page with parameters like below.&lt;/DIV&gt;
&lt;DIV&gt;(covered client_id for privacy)&lt;/DIV&gt;
&lt;DIV&gt;&amp;nbsp;&lt;/DIV&gt;
&lt;DIV&gt;
&lt;A href="https://www.dropbox.com/1/oauth2/authorize?client_id=" target="_blank" rel="nofollow noreferrer"&gt;https://www.dropbox.com/1/oauth2/authorize?client_id=&lt;/A&gt;&amp;lt;client_id&amp;gt;&amp;amp;redirect_uri=x-agent%3A%2F%2Fdropbox_callback&amp;amp;response_type=code&amp;amp;state=MTQ0NzE0MTkyNTc3MQ%3D%3D&lt;/DIV&gt;
&lt;DIV&gt;&amp;nbsp;&lt;/DIV&gt;
&lt;DIV&gt;The page returned 400 HTTP status error code with message: We can't find the page you're looking for. Check out our Help Center and forumsfor help, or head back to home.&lt;/DIV&gt;
&lt;DIV&gt;&amp;nbsp;&lt;/DIV&gt;
&lt;DIV&gt;My developer account has 'Full Dropbox' permission.&lt;/DIV&gt;
&lt;DIV&gt;So, I don't think permission problem.&lt;/DIV&gt;
&lt;DIV&gt;Moreover, client_id, redirect_uri, response_type were right.&lt;/DIV&gt;
&lt;DIV&gt;state parameter also was encoded by Base64.&lt;/DIV&gt;
&lt;DIV&gt;&amp;nbsp;&lt;/DIV&gt;
&lt;DIV&gt;Did I something miss?&lt;/DIV&gt;
&lt;DIV&gt;&amp;nbsp;&lt;/DIV&gt;
&lt;DIV&gt;Thanks for your support in advance.&lt;/DIV&gt;</description>
      <pubDate>Wed, 29 May 2019 09:38:42 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149076#M4888</guid>
      <dc:creator>YOUNGGON K.</dc:creator>
      <dc:date>2019-05-29T09:38:42Z</dc:date>
    </item>
    <item>
      <title>Re: Fail to load oauth2/authorize page</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149077#M4889</link>
      <description>&lt;P&gt;Thanks for the report. We're looking into it.&lt;/P&gt;</description>
      <pubDate>Tue, 10 Nov 2015 23:28:22 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149077#M4889</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2015-11-10T23:28:22Z</dc:date>
    </item>
    <item>
      <title>Re: Fail to load oauth2/authorize page</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149078#M4890</link>
      <description>&lt;P&gt;Ok, the /authorize page should be behaving properly now, and returning useful error messages.&lt;/P&gt;
&lt;P&gt;For example, in this case, you should get:&lt;/P&gt;
&lt;P&gt;"More details for developers&lt;/P&gt;
&lt;P&gt;Invalid redirect_uri: "x-agent://dropbox_callback": When response_type=code, redirect_uri must start with "https://", unless it's a localhost URI."&lt;/P&gt;</description>
      <pubDate>Thu, 12 Nov 2015 04:09:17 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149078#M4890</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2015-11-12T04:09:17Z</dc:date>
    </item>
    <item>
      <title>Re: Fail to load oauth2/authorize page</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149079#M4891</link>
      <description>&lt;P&gt;I am with almost the same problem...&lt;BR /&gt;&lt;BR /&gt;Invalid redirect_uri. When response_type=code, redirect_uri must start with "https://", unless it's a localhost URI.&lt;/P&gt;</description>
      <pubDate>Wed, 18 May 2016 00:06:53 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149079#M4891</guid>
      <dc:creator>Fábio P.1</dc:creator>
      <dc:date>2016-05-18T00:06:53Z</dc:date>
    </item>
    <item>
      <title>Re: Fail to load oauth2/authorize page</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149080#M4892</link>
      <description>&lt;P&gt;Hi&amp;nbsp;Fábio,&amp;nbsp;can you elaborate on the issue you're seeing? It sounds like you are properly seeing the error message on the /authorize page. OAuth 2 redirect URIs for the "code" flow do need to start with "https://", unless it's a localhost address.&lt;/P&gt;</description>
      <pubDate>Wed, 18 May 2016 00:54:37 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149080#M4892</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2016-05-18T00:54:37Z</dc:date>
    </item>
    <item>
      <title>Re: Fail to load oauth2/authorize page</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149081#M4893</link>
      <description>&lt;P&gt;Gregory, the thing is.&lt;BR /&gt;I am trying to install the R package "rdrop2" in a server here.&lt;BR /&gt;When I try the command:&lt;BR /&gt;dropbox_credentials &amp;lt;- &lt;BR /&gt;drop_auth()&lt;BR /&gt;drop_auth(new_user = T, key="mykey", secret="mysecretcode", cache=TRUE) ## &lt;BR /&gt;&lt;BR /&gt;I already have created the app in Dropbox&lt;BR /&gt;&lt;BR /&gt;The shell send me the follow message:&lt;/P&gt;
&lt;P&gt;&amp;gt; drop_auth()&lt;BR /&gt;httpuv not installed, defaulting to out-of-band authentication&lt;BR /&gt;Please point your browser to the following url:&lt;/P&gt;
&lt;P&gt;&lt;A href="https://www.dropbox.com/1/oauth2/authorize?client%5Fid=mmhfsybffdom42w&amp;amp;scope=&amp;amp;redirect%5Furi=urn%3Aietf%3Awg%3Aoauth%3A2%2E0%3Aoob&amp;amp;response%5Ftype=code" rel="nofollow noreferrer"&gt;https://www.dropbox.com/1/oauth2/authorize?client%5Fid=mmhfsybffdom42w&amp;amp;scope=&amp;amp;redirect%5Furi=urn%3Aietf%3Awg%3Aoauth%3A2%2E0%3Aoob&amp;amp;response%5Ftype=code&lt;/A&gt;&lt;/P&gt;
&lt;P&gt;Enter authorization code: ????&lt;/P&gt;
&lt;P&gt;But I am not able to access this page...&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Wed, 18 May 2016 01:17:53 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149081#M4893</guid>
      <dc:creator>Fábio P.1</dc:creator>
      <dc:date>2016-05-18T01:17:53Z</dc:date>
    </item>
    <item>
      <title>Re: Fail to load oauth2/authorize page</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149082#M4894</link>
      <description>&lt;P&gt;The redirect_uri being supplied in that /authorize URL is: "urn:ietf:wg:oauth:2.0:oob". That doesn't start with https://, and as such isn't allowed by Dropbox's OAuth 2 implementation, per the error message. You'll need to use an https:// (or localhost) redirect URI instead.&amp;nbsp;&lt;/P&gt;
&lt;P&gt;If it's helpful for your case,&amp;nbsp;Dropbox provides a receiver&amp;nbsp;page at:&amp;nbsp;&lt;A href="https://www.dropbox.com/1/oauth2/redirect_receiver" rel="nofollow noreferrer"&gt;https://www.dropbox.com/1/oauth2/redirect_receiver&lt;/A&gt;&lt;/P&gt;</description>
      <pubDate>Wed, 18 May 2016 01:29:39 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149082#M4894</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2016-05-18T01:29:39Z</dc:date>
    </item>
    <item>
      <title>Re: Fail to load oauth2/authorize page</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149083#M4895</link>
      <description>&lt;PRE&gt;&lt;SPAN class="pl-c"&gt;I discovered that I did not have this package:&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;PRE&gt;&lt;SPAN class="pl-c"&gt;# install from CRAN&lt;/SPAN&gt;
install.packages(&lt;SPAN class="pl-s"&gt;&lt;SPAN class="pl-pds"&gt;"&lt;/SPAN&gt;httpuv&lt;SPAN class="pl-pds"&gt;"&lt;/SPAN&gt;&lt;/SPAN&gt;)&lt;/PRE&gt;
&lt;P&gt;Now, it is working, and it is authenticating automaticly.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Thank you Gregory.&lt;/P&gt;</description>
      <pubDate>Wed, 18 May 2016 01:46:07 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/Fail-to-load-oauth2-authorize-page/m-p/149083#M4895</guid>
      <dc:creator>Fábio P.1</dc:creator>
      <dc:date>2016-05-18T01:46:07Z</dc:date>
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