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I have a very strange situation on my home network and I just can't figure out the issue. My home network consists of a cable modem, DD-WRT router, switch, server box, pc box, laptop, phones and tablets.
Yesterday, a windows update was pushed to the laptop (which runs Win10 x64). I believe it was the rather large cumulative update that was released recently.
Afterwards, using the laptop, I could not connect to my Windows 2012 R2 server, although I could ping it. Doing the typical IT troubleshooting thing, I tried several different 'tests' to try and diagnose the problem:
- I cannot RDP to the server from the laptop - just says it can't communicate with the remote machine.
- I cannot view any web sites (eg PLEX) that run on the server from the laptop. Just says it cannot connect.
- I can successfully ping the server from the laptop.
- My PC, which runs Win10 and is connected via LAN, can RDP and view sites on the server.
- The laptop is connected via wifi. I can connect to the server web sites (eg PLEX) from my phone/tablet, which are also connected via wifi.
- I can connect to other internally hosted sites (eg my NAS, printer) from the laptop.
- I tried disabling anti-virus, malwarebytes and the firewall on the laptop.
- I made sure that on the laptop, windows update was updated, and the latest drivers for the wifi driver / chipset.
- I tried connected to the server where the laptop network connection was set to both 'public' and then 'private'.
- Obviously, I rebooted the router, the laptop, the server.
- Other than the failure to connect to the server, the laptop is running perfectly fine - does everything that it used to.
I would consider myself fairly good with IT but this has got me stumped. Does anyone have any further tests I could try? Or better yet, some diagnostics I could run? Or even better, has anyone else had this problem?
Did you tested wired ? – yagmoth555 – 2016-09-20T00:32:46.937
No I haven't. I considered that and thought I would rule that out by being able to connect via other wifi devices.. but I will test that tonight. – benpage – 2016-09-20T00:35:53.337
I sometimes find that a windows update, the machine behaves strangely until I complete a reboot. – Burt_Harris – 2016-09-20T03:08:39.110
similar thread with no apparent answer, but maybe some ideas; http://superuser.com/q/957494/258947
– CAB – 2016-09-20T03:11:10.617Sounds like a firewall issue, maybe try this article
– CAB – 2016-09-20T03:14:12.690@CAB hopeful.. but I can RDP fine to the server from another machine - I'm trying with the exact same username & pwd.. also I thought it was firewall, but like i said - I can connect without any issues from another machine on the LAN. And I tried disabling the firewall on the laptop, that didn't help. :( – benpage – 2016-09-20T05:48:52.633