This is a workaround to include Navisworks Manage 2016 SP2 to your network deployment of Navisworks Manage 2015 in case you were not able to add the SP via Application Manager.
1.Download Navisworks Manage 2016 Service Pack 2 from the link below.
2. Place Autodesk_Navisworks_2016_Service_Pack_2_Multilingual_Manage_64bit.msp file in your Navisworks Manage 2016 network deployment x64\NAVMAN\ folder.
3.Open your Navisworks Manage 2016 network deployment ini file (you can find the file in your deployment Img folder, 'your_deployment_name.ini') in Notepad add the path to Autodesk_Navisworks_2016_Service_Pack_2_Multilingual_Manage_64bit.msp under Navisworks section in PATCHES=.
4. Save the ini file