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My main PC went online - no problem. My laptop would not connect; Wifey's PC would not connect. All three connected OK two days ago. Wifey's PC would connect to our Pinnacle TV streamer, so I knew her equipment was good.

I started poking through my router settings and found that DynamicDNS was disabled. Re-enabled DDNS and all's well. Still can't figure how DDNS became disabled.
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