Hi @ all, I have an application handeling commands. Every command is created, executed and deleted at the end. For this, I use a SiftingAppender, with the commandId from the MDC as discriminator. As I understand the concept of the SiftingAppender, it creates a new Appender (in my case FileAppenders that write to seperate folders) for every command, that is created. So far, so good. Now I want to delete my command, inclusive its working directory with its logs. There I get a exception, that the directory cannot be deleted, because files are still in use. I assume, that the logfile cannot be deleted, because the Stream of the FileAppender still is open. Is there a possibility to close the stream. I would prefer a solution, where the FileAppender is closed or detached only by use of slf4j-api. But I believe, that I also have to use logBack in my source code. Until now, I succeeded getting the SiftingAppender, but I couldn't get the FileAppender. Matthias