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I am getting a "Connection Error - Failed to setup Virtual adapter. (Error:1205)" Message when signing into the VPN


Some people may encounter and error when signing into the VPN. An error "Connection Error - Failed to setup Virtual adapter. (Error:1205)" will show up. This is due to the limited buffer space for the machine. The following instructions will help correct this issue.

Disclaimer: The  following changes are increasing the max buffer on the Mac OS X IP  stack. Please take careful consideration before making these changes.  Pulse Secure and the University is not liable in any shape or form for any data  losscomputer and / or computer related equipment malfunction. Always  backup your computer system and registry before attempting to modify  your computer system and program files. Please use at your own risk.

1. In Spotlight Search (top right hand magnifying glass) search for "terminal"

2. When the terminal window appears, determine what your machine's max buffer size with the following command.

Copy and paste this into the terminal window. It will ask for your computers password. While entering your password it will look like nothing is being entered. This is normal in Terminal. Hit enter on your keyboard when you are finished.

sudo sysctl -a kern.ipc.maxsockbuf

3. The value should be 8388608.  If not, run the following command:

sudo sysctl -w kern.ipc.maxsockbuf=8388608

4. Reboot the your computer after. The Pulse Secure VPN should work afterwards

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