Symptoms
When you sign in to VPN, email may stop being sent / received, you may not see Onedrive sync properly, or outlook may appear to freeze.
IPv6 is the culprit
Some home internet services pass a newer version of internet protocols to the internet. Our current VPN system does not properly route this traffic which can result in email delivery to your endpoint stalling. This affects Outlook 2016, Office 365 (installed) as well and systems such as OneDrive.
How to resolve
This issue is something the UNEX IT Services can fix on your workstation. Please send a help request in to its@uclaextension.edu or use this form: Submit a request – UCLA Extension (zendesk.com)