(1) Altought Offtopic (my apoligies) it is usually not recommended to run Exchange with any other application or service on the system. Exchange expects to have FULL access to all system resources so sharig exchange with ANY other process requires proper configuration of exchange services not to mention other applications so the processes will not conflict. This is not a topic of this list, contact an exchange list for details on this setup. (2) TCP/25 = SMTP which is the SMTP virtual server, default. Each service must have a unique available port, when some process occupies a port already the other process can't bind to it an will not start. Have to use an available/unused tcp port. I have no personal experience running OTRS in a windows envionment. As with running multiple services on any system you have to configure the services to not conflict. LQ ________________________________ From: otrs-bounces@otrs.org [mailto:otrs-bounces@otrs.org] On Behalf Of pri pri Sent: Thursday, June 28, 2007 7:24 AM To: otrs@otrs.org Subject: RE: [otrs] otrs disables exchange virtual server hi we had a problem with our exchange and so i had to uninstall OTRS. now i am able to install OTRS successfully only if i disable the exchange virtual server. even if i change the port number to 25 which is the TCP port number in httpd.exe am still not able to start my exchange virtual server which is also a http service. is there any way i can solve this? i tried starting the installer as http://localhost:25/otrs/installer.pl but it does not work. it works only as http://localhost/otrs/installer.pl can i not run both otrs and exchange virtual server?? sorry for the trouble thank youu