If the PULSE SECURE NETWORK CONNECT SERVICE will not start on your PC, you may have to perform a manual uninstall of your Pulse / Juniper software. I have personally seen this problem on both Windows 7 Enterprise and Windows 10 Pro.

Windows Vista, Vista SP1 or Vista SP2 (32- or 64-bit). Actualizar software para motorola xt316 spicer. Because Junos Pulse does not return a specific error code for authentication failure, iPass will not be.
After many hours working with Pulse support, ended up building on their limited cookbook and have detailed the instructions below. The items in bold were important to most of client problems so you may want to follow those first.

If this still fails, run a Windows patch cycle (yes, one of the many machines I was working on apparently needed this, even though it was last patched about 6 weeks prior).
If that does not, launch REGEDIT and remove every reference to JUNIPER or PULSE that makes sense.
There is a Juniper KBase article KB20586 that I no longer have access to which apparently makes some references to this issue