My wife often brings her work laptop home. I have configured that laptop to wirelessly connect to our router. Normally, she is able to access every website that she desires.
However, that are certain websites at her work that when she tries to access them, the pages never load!
After a while, her browser displays an error message about not being able to reach the site.
This happens with every major browser (Firefox, Chrome, Edge). So, it is probably not a browser issue.
This problem only happens when she is using our home router: on every public WiFi we have tried (e.g. Starbucks), her laptop can access all her work websites. So, those work websites are not blocking public access.
This problem does not occur with our home personal desktop: she can access all her work websites from it. So, it is not that our router is obviously the culprit.
Our desktop is connected to the router by an ethernet cable, not wirelessly. I tried plugging that ethernet cable into her work laptop, and after a bit, Windows 10 told me "No internet access". Hmm, I have never seen cabled ethernet fail... Not sure if this fact is related, but I thought I would mention it; it might be something that her IT at work configured?
Summary: there appears to be some strange conflict between my router and some of her work websites, but only when the client is wirelessly connected to the router.
I have poured thru my router's web admin interface, and I see nothing obvious. (Tho I am not remotely a network guru, so I could easily have overlooked something.)
Any suggestions would be greatly appreciated.
Dell Latitude E7470 running latest Windows 10
Netgear WNDR3700 v2 flashed to use DD-WRT v3.0-r27506 (07/09/15) std
Final fact: that router used to be configured to use my VPN. I stripped out all that config today, since I now rely on running my VPN's client software on each device that I want to use the VPN (e.g. my home desktop, but not her work laptop). Removing that VPN config did not solve this laptop connectivity problem.