If you're running the 5.2 version of the Pulse Secure VPN client and happen to have upgraded to macOS Sierra, you will quickly find that it has lost your settings and is not able to make any connections. Instead it displays the message "Failed to connect to the Pulse Secure Service". Great!
So according to the knowledge articles
that version simply needs to be upgraded to the latest 5.2R5 or rather 5.2.5 version. However, there is no link in sight.
Luckily for us, the University of Exeter has an 'Off campus access with VPN' page that provides a number of VPN clients for you to download
If you want a direct link to the correct VPN client that will work on Sierra, here it is: https://as.exeter.ac.uk/media/level1/academicserviceswebsite/it/documents/networks/vpn/ps-pulse-mac-5.2r5.0-b869-installer.dmg
After installing, the about box should show you this...
Now you will be able to connect as before.
Another approach is to use an old Junos Pulse 5.0.3 client. I tried that out and it works like a charm, but asks you to upgrade every time you connect to a VPN.
A quick disclaimer...
Although I put in a great effort into researching all the topics I cover, mistakes can happen.
Use of any information from my blog posts should be at own risk and I do not hold any liability towards any information misuse or damages caused by following any of my posts.
All content and opinions expressed on this Blog are my own and do not represent the opinions of my employer (Oracle).
Use of any information contained in this blog post/article is subject to this disclaimer