Solution Deinstall any Juniper Software Deinstall Vodafone Software Reboot Computer Activate Windows Firewall Add some rules to Windows Firewall advanced setting run mmc.exe -> Add Windows Firewall advanced setting snap-in Change Vista Advance firewall default settings to block all inbound and outbound traffic. Create the following outbound rules in the appropriate firewall profile: Create a port rule to allow any to any IP and TCP any port to 443 Create a custom rule to allow 127.0.0.1 to 127.0.0.1 TCP any to any Allow iExplorer.exe Reinstall Vodafone Software WITHOUT "Optimizing Software" Reboot Computer Dialin with UMTS Access Juniper and let install the Network Connect software More information: Recieving the error "nc.windows.app.23712" when launching Network Connect http://kb.pulsesecure.net/index?page=content&id=KB11040&actp=search&searchid=1233052176754 Which access rules should be added on Windows Vista Advanced Firewall to allow Network Connect communication? http://kb.pulsesecure.net/index?page=content&id=KB11584&actp=search&searchid=1233050127807 ... View more