No webportal after updating from 4.10.4 to 4.12


After updating my commandline Ubuntu server to 4.12 there is no webportal. When I go to the url I get the following message. Is this problem caused by not going to 4.11?

HTTP Status 404 – Not Found
Type Status Report

Message /knime/

Description The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.

Also, I have I have not changed the messaging to use Qpid despite downloading the zipped executor and extracting it to my workspace directory, I was wondering if this was a part of the mistake that I have made?

Many Thanks.


Hi Nick,

Can you take us through the upgrade that you did to go from 4.10.4 to 4.12? All steps included would be. helpful for us to see if there were any missed steps. Do you currently have KNIME Server to start using systemctl services, or are you manually starting the KNIME Server using the startup commands?



additionally, could you provide the catalina.<date>.log after starting KNIME Server?
Also, could you check that you replace the knime-tomcat.jar (<apache-installation>/libs/knime-tomcat.jar) with a never version?
403 errors after startup suggest that the server didn’t start properly.


Thanks for the response, I have been able to re-build from scratch so these are no longer issues I have.