https://connect.hyland.com/t5/alfresco-forum/acs-23-1-share-quicklink-redirect-for-authentication-when-using/m-p/147823#M39108 <P>Hello,</P><P>We recently upgraded from ACS Community 7.1 to ACS Community 23.1 and switched our authentication mechanism from Kerberos to self-hosted Keycloak.</P><P>Now, an authentication is required to preview the PDF when using a link from the public link feature in the Alfresco Share.</P><P>In the network analyzer of the browser, we can see it tries to access the URL "<SPAN><A href="https://alfresco-url/share/proxy/alfresco-noauth/api/internal/shared/node/dMy3mMyk34mPp3mio/content/thumbnails/pdf" target="_blank" rel="noopener nofollow noreferrer">https://alfresco-url/share/proxy/alfresco-noauth/api/internal/shared/node/dMy3mMyk34mPp3mio/content/thumbnails/pdf</A>" and received an HTTP 302 response. </SPAN></P><P><SPAN>Then the browser tries to authenticate through Keycloak and the PDF preview is never displayed.</SPAN></P><P><SPAN>Any idea for this curious behavior ?</SPAN></P><P><SPAN>Best regards,</SPAN></P><P><SPAN>Adrien</SPAN></P> Wed, 15 May 2024 14:26:58 GMT ABarth 2024-05-15T14:26:58Z https://connect.hyland.com/t5/alfresco-forum/acs-23-1-share-quicklink-redirect-for-authentication-when-using/m-p/147823#M39108 <P>Hello,</P><P>We recently upgraded from ACS Community 7.1 to ACS Community 23.1 and switched our authentication mechanism from Kerberos to self-hosted Keycloak.</P><P>Now, an authentication is required to preview the PDF when using a link from the public link feature in the Alfresco Share.</P><P>In the network analyzer of the browser, we can see it tries to access the URL "<SPAN><A href="https://alfresco-url/share/proxy/alfresco-noauth/api/internal/shared/node/dMy3mMyk34mPp3mio/content/thumbnails/pdf" target="_blank" rel="noopener nofollow noreferrer">https://alfresco-url/share/proxy/alfresco-noauth/api/internal/shared/node/dMy3mMyk34mPp3mio/content/thumbnails/pdf</A>" and received an HTTP 302 response. </SPAN></P><P><SPAN>Then the browser tries to authenticate through Keycloak and the PDF preview is never displayed.</SPAN></P><P><SPAN>Any idea for this curious behavior ?</SPAN></P><P><SPAN>Best regards,</SPAN></P><P><SPAN>Adrien</SPAN></P> Wed, 15 May 2024 14:26:58 GMT https://connect.hyland.com/t5/alfresco-forum/acs-23-1-share-quicklink-redirect-for-authentication-when-using/m-p/147823#M39108 ABarth 2024-05-15T14:26:58Z https://connect.hyland.com/t5/alfresco-forum/acs-23-1-share-quicklink-redirect-for-authentication-when-using/m-p/492888#M40425 <P>Hello&nbsp;<a href="https://connect.hyland.com/t5/user/viewprofilepage/user-id/30713">@ABarth</a>&nbsp;,&nbsp;I am facing the same problem, were you able to find a solution?</P> Mon, 15 Sep 2025 18:07:39 GMT https://connect.hyland.com/t5/alfresco-forum/acs-23-1-share-quicklink-redirect-for-authentication-when-using/m-p/492888#M40425 fachablou 2025-09-15T18:07:39Z