From: Allen Mulvey <allen@amulvey.com>
To: PIC List <PICList@MIT.EDU>
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Date: Mon, 9 Aug 2021 18:39:31 -0700
Subject: [OT] Windows 10 Networking Change
Thread-Topic: [OT] Windows 10 Networking Change
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I have an access control system for my home which uses a central=20
controller with Wiegand RFID scanner/keyboards at the access points. It=20
has worked well for many years. The software was made pre-Windows 10=20
but, until last April, it worked fine on Windows 10 Pro. It worked fine=20
on Windows 10 pro in April 2020. I did not have need to use it again=20
until about a month ago. Now it occasionally works on Windows 10 but=20
usually it does not, giving an error indicating that it cannot find the=20
controller boards. I have one for my house and one for my garage both=20
are connected to my local area network with fixed (reserved) IP=20
addresses. I can ping them but the software cannot connect. The=20
software, iCCard, works perfectly from a Windows 8 Pro virtual machine=20
(Hyper-V).

Apparently something changed in the way Windows 10 handles networking or=20
in my network adapter driver. Does anyone have any idea what happened?=20
It is annoying to have to use a virtual machine just to run this=20
software. My network adapter is a Mellanox ConnectX-3 Ethernet (Fiber)=20
adapter. I looked at the advanced adapter settings in the VM and=20
compared them to my desktop. Nothing seems to influence this problem.

Any help would be appreciated,
Allen
--=20
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