HP Matrix Operating Environment Software - Manual (Page 167)

Your browser's zone security settings are not compatible with the HP SIM popup menu.
The following setting must be enabled in your current zone:
Internet Options | Security | Custom Level | Miscellaneous | Allow script-initiated windows without size or
position constraints
(This setting is enabled by default for the "medium-low" security level, such as the "local intranet" zone.)
Miscellaneous user interface issues 167