You receive lots of warnings in your logs with the following pattern:
WARNING: Found invalid crumb xxxxxxxxxxxxx. Will check remaining parameters for a valid one... hudson.security.csrf.CrumbFilter doFilter WARNING: No valid crumb was included in request for /ajaxExecutors. Returning 403.
CloudBees Jenkins Operations Center
In the meantime, and as a workaround, you can avoid your logs to be flooded whith these messages by changing the log level to
SEVERE on the following logger
In order to do this, please follow the procedure below:
- Navigate to Jenkins->Manage->System Log->Log Levels.
hudson.security.csrf.CrumbFilterin the textbox, select the
SEVERElevel value and then click submit.