Hi, I'm using both logback-access.xml and logback.xml in a Spring boot application. I have <logger name="ch.qos.logback" level="WARN" /> set in the logback-spring.xml but on application startup I get the following log: //application startup logback.xml formatted log ... 2015-09-17 13:31:49.056 INFO 22580 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http) //logback-access init log starts with a different pattern 13:31:49,711 |-INFO in ch.qos.logback.access.joran.action.ConfigurationAction - debug attribute not set 13:31:49,714 |-INFO in ch.qos.logback.core.joran.action.StatusListenerAction - Added status listener of type [ch.qos.logback.core.status.OnConsoleStatusListener] 13:31:49,715 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender] 13:31:49,715 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [querydiff] 13:31:49,752 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.access.boolex.JaninoEventEvaluator] for [evaluator] property 13:31:49,774 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.core.boolex.Matcher] for [matcher] property 13:31:49,815 |-INFO in ch.qos.logback.access.boolex.JaninoEventEvaluator@4fa3ffe0 - Adding [return] prefix and a semicolon suffix. Expression becomes [return url.matches(event.getRequestURL().toString());] 13:31:49,815 |-INFO in ch.qos.logback.access.boolex.JaninoEventEvaluator@4fa3ffe0 - See also http://logback.qos.ch/codes.html#block 13:31:50,031 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy - Will use zip compression 13:31:50,032 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy - Will use the pattern logs/querydiff-access.%d{yyyy-MM-dd}.log for the active file 13:31:50,033 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - The date pattern is 'yyyy-MM-dd' from file name pattern 'logs/querydiff-access.%d{yyyy-MM-dd}.log.zip'. 13:31:50,033 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Roll-over at midnight. 13:31:50,034 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Setting initial period to Thu Sep 17 12:44:43 CST 2015 13:31:50,034 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.access.PatternLayoutEncoder] for [encoder] property 13:31:50,069 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[querydiff] - Active log file name: logs/querydiff-access.log 13:31:50,069 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[querydiff] - File property is set to [logs/querydiff-access.log] 13:31:50,070 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [querydiff] to ch.qos.logback.access.tomcat.LogbackValve[] 13:31:50,070 |-INFO in ch.qos.logback.access.joran.action.ConfigurationAction - End of configuration. 13:31:50,070 |-INFO in ch.qos.logback.access.joran.JoranConfigurator@5814c52f - Registering current configuration as safe fallback point 13:31:49,711 |-INFO in ch.qos.logback.access.joran.action.ConfigurationAction - debug attribute not set 13:31:49,714 |-INFO in ch.qos.logback.core.joran.action.StatusListenerAction - Added status listener of type [ch.qos.logback.core.status.OnConsoleStatusListener] 13:31:49,715 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender] 13:31:49,715 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [querydiff] 13:31:49,752 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.access.boolex.JaninoEventEvaluator] for [evaluator] property 13:31:49,774 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.core.boolex.Matcher] for [matcher] property 13:31:49,815 |-INFO in ch.qos.logback.access.boolex.JaninoEventEvaluator@4fa3ffe0 - Adding [return] prefix and a semicolon suffix. Expression becomes [return url.matches(event.getRequestURL().toString());] 13:31:49,815 |-INFO in ch.qos.logback.access.boolex.JaninoEventEvaluator@4fa3ffe0 - See also http://logback.qos.ch/codes.html#block 13:31:50,031 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy - Will use zip compression 13:31:50,032 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy - Will use the pattern logs/querydiff-access.%d{yyyy-MM-dd}.log for the active file 13:31:50,033 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - The date pattern is 'yyyy-MM-dd' from file name pattern 'logs/querydiff-access.%d{yyyy-MM-dd}.log.zip'. 13:31:50,033 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Roll-over at midnight. 13:31:50,034 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Setting initial period to Thu Sep 17 12:44:43 CST 2015 13:31:50,034 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.access.PatternLayoutEncoder] for [encoder] property 13:31:50,069 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[querydiff] - Active log file name: logs/querydiff-access.log 13:31:50,069 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[querydiff] - File property is set to [logs/querydiff-access.log] 13:31:50,070 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [querydiff] to ch.qos.logback.access.tomcat.LogbackValve[] 13:31:50,070 |-INFO in ch.qos.logback.access.joran.action.ConfigurationAction - End of configuration. 13:31:50,070 |-INFO in ch.qos.logback.access.joran.JoranConfigurator@5814c52f - Registering current configuration as safe fallback point //application startup logback.xml formatted log continues 2015-09-17 13:31:50.138 INFO 22580 --- [ost-startStop-1] com.ptmind.api.userinfo.Application : Running with Spring profile(s) : [dev] Logback-access init code doesn't seem to log through the configured logback instance. I hope the problem is clear. Best