Neither IT person but success using Remote Login
As an engineer ( designing steel and concrete structures) my lawyer brother occasionally calls for support.*
He had a persistent problem logging from his laptop into a set of legal databases. He would log in and be thrown out within minutes.
I remoted in and noticed he had the wrong date on the laptop. What was happening was the log in set a cookie with an expiry but the date was such that the expiry date was before the date on the laptop and he was thrown out.
I was well chuffed.
*He rang years and years ago asking how to delete his browsing history but as a Compuserve (remeber them) subscriber there was a duplicate history, which his 12 year old son found telling him oh if you wanted to delete your history you should have asked me.