Good lord, 3rd part vendor's employee needs to VPN into my network.
He encountered one issue, which I corrected. Now he absolutely refuses to so much as try again, and just insists that it can't be made to work. He keeps blaming bad drivers and how he doesn't want to debug Juniper issues.
He won't even try. I fucking fixed the issue he had, and tested it with 16 hours of continuous use over two work days. IT FUCKING WORKS. He just refuses to try.
Why are people like this?