https://community.cloudera.com/t5/Support-Questions/Http-status-401-Authentication-Error/m-p/67143#M45686 <P>Hello There,</P><P>&nbsp;</P><P>&nbsp;</P><P>I'm getting the error while login into the namenodeUI, ResourcemanagerUI, JobhistoryserverUI. I have checked the httpd service it is up and running. I have checked the port it is listening. Please tell me the solution for this. need to check the NamenodeUI.</P><P>&nbsp;</P><P><U><STRONG>Error:</STRONG></U></P><P>&nbsp;</P><P>HTTP ERROR 401</P><P>Problem accessing /index.html. Reason:</P><P>org.apache.hadoop.security.authentication.util.SignerException: Invalid signed text:</P><HR /><P><U><STRONG><I>Powered by Jetty://</I></STRONG></U></P><P>&nbsp;</P><P><U><STRONG><I>Thanks &amp; regards,</I></STRONG></U></P><P><U><STRONG><I>krishna.</I></STRONG></U></P> Fri, 16 Sep 2022 13:12:32 GMT krishnap 2022-09-16T13:12:32Z