XP no longer on network after Sept Win 10 update

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Old XP unit running on a Win10 network was working fine but after Win 10 update sometime around 9/11, Win 10 machine no longer sees it and cannot get to Internet.  Cable seems to be OK (goes between machines on outside of one story building), Tried resetting modem.

First though was Ethernet card failing. However, Ethernet is built into the MB on this machine. When I first got the unit (years ago), the onboard Ethernet failed and Dell replaced the MB under warranty. However, while I was waiting for them, I went to CompUSA, and purchased an Ethernet card to hold me over. After Dell replaced the MB, I went back to the onboard Ethernet and been using that for years.

When this happened, I disabled the onboard Ethernet and re-enabled the CompUSA card. still plugged in. Same “Ethernet cable is disconnected message.” So, now I have 2 Ethernet outlets that don’t work. Best I know all worked fine until the MS update on the Win10 unit.

Dr. Jim

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SMB-1 has ben turned off on Win10 for security reasons. But older equipment still need it. It may need to be turned on. The location in both Win10 and XP should be roughly the same.
I suggest you read through this Topic.
I would start with turning on SMB-1, although there are security risks.
Also, there is information about what services need to be turned on for networking in Win10.

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MS recommended SMBv1 be disabled.

https://www.thewindowsclub.com/disable-smb1-windows

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But Jim would like to communicate with an XP installation without resorting to 3½” floppies. Best would be to isolate a router as separate intranet before activating SMB1. That is not always an available option. Jim should weigh the risk against the convenience. Using SMB1 for the needed task and then re-disabling is an option, with reduced risk, but not zero.

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