Some Windows 10 systems may experience an error when attempting to update or install Cisco Secure Client if a previous version of the software was present on the device.
 
Known Causes & Symptoms:

• The user upgraded to Windows 10 without first uninstalling Secure Client.
• The Cisco Secure Client automatic update failed to complete or was interrupted.
• Cisco Secure Client Reinstall/Upgrade will not complete and will post an error to the event log:
  • There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor

Resolution:
 
These solutions have not been tested and should not be recommended for personal devices.
 
https://community.cisco.com/t5/vpn/anyconnect-re-install-on-windows-10-hanging/td-p/2703272
 
https://www.tecklyfe.com/cisco-anyconnect-fails-install-upgrade-windows-10-anniversary-update/

How to Get Help

Technical assistance is available through the Illinois State University Technology Support Center at:

• Phone: (309) 438-4357
• Email: SupportCenter@IllinoisState.edu
• Submit a Request via Web Form: Help.IllinoisState.edu/get-it-help
• Live Chat: Help.IllinoisState.edu/get-it-help