On Windows 2000 and 2003 Server with IIS 5 or 6, installing Groupwise 7.0 WebAccess to IIS automatically installs Tomcat 5.5.
As the iManager installation begins, the iManager installer program detects that IIS and Tomcat are available for use. The installer reports the inability to stop the iisadmin service. Near the end of the install, the installer reports the inability to start Tomcat.
After the install is completed, Groupwise WebAccess still works, but iManager does not (HTTP 404: Page not found).
Workaround: Do not install iManager and Groupwise on the same server.