https://community.appian.com/discussions/f/administration/11021/unable-to-login-after-migration-from-7-11-to-17-2Hi All, We are not able to login to Appian application after starting of JBOSS (we upgraded system from 7.11 to 17.2). While login in to Appian we are getting error as &quot;The username/password entered is invalid. Usernames and passwords are case sensitiveen-USTelligent Community 12https://community.appian.com/thread/52588?ContentTypeID=1Tue, 13 Feb 2018 09:35:44 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:55eacdc9-fc75-4a0f-b4f1-b07fb3337320prakashb9987Hi Aswinb,<br /> <br /> If you are not on Appian 16.3 or higher, you must first update to 16.3 before updating to the 17.2, before 16.3 security file scripts and <br /> after 16.3 security file scripts are different thats why you are getting error.For your reference go through the bellow link<br /> <a href="https://docs.appian.com/suite/help/17.4/Upgrade_Guide.html.">docs.appian.com/.../Upgrade_Guide.html.</a><br /> <br /> Thanks,<br /> Prakash<div style="clear:both;"></div>https://community.appian.com/thread/50956?ContentTypeID=1Mon, 18 Dec 2017 19:03:28 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:3f04f039-2d4e-4cfb-85e3-387ae76d2fecaswinb608there is a change in spring security files from 7.11 to 16.2 to 17.x versions....pls upgrade from 7.11 to 16.2 and then from 16.2 to 17.2<div style="clear:both;"></div>