Hi, I want to add a file appender to one of my loggers, from the inside of the code, not from the configuration file. I successfully append the network appender but the same way did not work in file appenders. Here is the code that I tried: FileAppender<E> myFAppender = new FileAppender<E>(); myFAppender.setFile("myLog.txt"); myFAppender.setName("myFAppender1"); LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory(); myFAppender.setContext(lc); myFAppender.start() myLogger.addAppender(myFAppender); <---- this method do not accept an argument type of FileAppender<E> . In socket appender, I used ILogging event and it worked well but in file appender case I did not solve the issue below. Thanks, Best Regards, Berker Batur