Hi, Windows 2003 Server Standard Edition SP2 (32 bit) After installing OTRS 2.4.0 Beta 1 we get the following error message "Parent: child process exited with status 3221225477 -- Restarting" in the Apache log whenever we try to access OTRS via the web browser. I have uninstalled OTRS and made a clean install. The error occurs when one accesses the web installer. I enter http://localhost/otrs/installer.pl in the browser, and Apache crashes. We had the same problems with OTRS 2.3.4 on the same machine, but I resolved the problem by adding the following path to the PATH environment variable: "C:\OTRS\MySQL\bin" I have googled quite a bit found others that have had the same error, often in the context PHP and Apache. Sometimes the error was resolved by modifying the PATH environment variable as above, others copied the libmysql.dll file into the System32 diretory, others by copying the libmysql.dll to the Apache bin directory. In my case neither of these tips has helped. Below the Apache log, set to the level "debug". Unfortunately it does not provide me with enough information o that I can try to find a resolution to my problem. Apache crashes approximately three times just by selecting the URL "http://localhost/otrs/installer.pl". I have just gone through uninstalling OTRS, cleaning the registry manually of all references to OTRS, and then reinstalling OTRS, but unfortunately the error remains. Perhaps someone has an idea how I can get to the bottom of this problem. At the moment I do not even know where to start looking. Regards Rudolf Bargholz szAppName : httpd.exe szAppVer : 2.2.10.0 szModName : msvcrt.dll szModVer : 7.0.3790.3959 offset : 0003876c Starting the Apache2.2 service The Apache2.2 service is running. ] Apache/2.2.10 (Win32) mod_perl/2.0.4-dev Perl/v5.10.0 configured -- resuming normal operations [Thu May 07 11:41:55 2009] [notice] Server built: Oct 10 2008 12:39:04 [Thu May 07 11:41:55 2009] [notice] Parent: Created child process 2468 [Thu May 07 11:41:55 2009] [debug] mpm_winnt.c(487): Parent: Sent the scoreboard to the child [Thu May 07 11:41:59 2009] [notice] Child 2468: Child process is running [Thu May 07 11:41:59 2009] [debug] mpm_winnt.c(408): Child 2468: Retrieved our scoreboard from the parent. [Thu May 07 11:41:59 2009] [info] Parent: Duplicating socket 244 and sending it to child process 2468 [Thu May 07 11:41:59 2009] [debug] mpm_winnt.c(605): Parent: Sent 1 listeners to child 2468 [Thu May 07 11:41:59 2009] [debug] mpm_winnt.c(564): Child 2468: retrieved 1 listeners from parent [Thu May 07 11:41:59 2009] [notice] Child 2468: Acquired the start mutex. [Thu May 07 11:41:59 2009] [notice] Child 2468: Starting 64 worker threads. [Thu May 07 11:41:59 2009] [notice] Child 2468: Starting thread to listen on port 80. [Thu May 07 12:37:00 2009] [notice] Parent: child process exited with status 3221225477 -- Restarting. [Thu May 07 12:37:04 2009] [notice] Apache/2.2.10 (Win32) mod_perl/2.0.4-dev Perl/v5.10.0 configured -- resuming normal operations [Thu May 07 12:37:04 2009] [notice] Server built: Oct 10 2008 12:39:04 [Thu May 07 12:37:04 2009] [notice] Parent: Created child process 3536 [Thu May 07 12:37:04 2009] [debug] mpm_winnt.c(487): Parent: Sent the scoreboard to the child [Thu May 07 12:37:08 2009] [notice] Child 3536: Child process is running [Thu May 07 12:37:08 2009] [debug] mpm_winnt.c(408): Child 3536: Retrieved our scoreboard from the parent. [Thu May 07 12:37:08 2009] [info] Parent: Duplicating socket 244 and sending it to child process 3536 [Thu May 07 12:37:08 2009] [debug] mpm_winnt.c(605): Parent: Sent 1 listeners to child 3536 [Thu May 07 12:37:08 2009] [debug] mpm_winnt.c(564): Child 3536: retrieved 1 listeners from parent [Thu May 07 12:37:08 2009] [notice] Child 3536: Acquired the start mutex. [Thu May 07 12:37:08 2009] [notice] Child 3536: Starting 64 worker threads. [Thu May 07 12:37:08 2009] [notice] Child 3536: Starting thread to listen on port 80. [Thu May 07 12:37:24 2009] [notice] Parent: child process exited with status 3221225477 -- Restarting. ... Google links: http://www.apachelounge.com/viewtopic.php?t=2856 http://www.java-samples.com/showtutorial.php?tutorialid=1050