Hello, I have installed the SP1 on Exchange 2003 and Windows 2000. Now, I have a lot of problem with OWA which don't run. I have events 101 and 103 : Active Server Pages "Service stopped", events 3 and 4 : Davex "Service to be shutdown", and events 36871 Schannel "SSL failed". Thank for your help. Lulu lulu49000@xxxxxxxx