SketchUp does not see internet connection even though IE is up-to-date and using Windows 10

I’m having a similar problem that has recently occured after years without a problem.
Sketchup Pro 2016, Windows 10, Internet Explorer 11.

I repaired SU with admin priviledges, Win10 is up to date, IE has javascript working, with medium security settings, and I can connect to 3dwarehouse.sketchup.com/ and https://www.trimble.com/ from it. From the Sketchup Help menu I can connect to everything, including License, except Check for Update which gives an “unable to obtain the latest version information. (possibly a different issue)” Attempting to connect to the 3D Warehouse results in “Could not connect to the 3D Warehouse.” I get a similar error when trying to connect to the Sketchucation Extension Store. Likewise geo-location is a no-go.

I’m having a similar problem that has recently occured after years without a problem.
Sketchup Pro 2016, Windows 10, Internet Explorer 11.

I repaired SU with admin priviledges, Win10 is up to date, IE has javascript working, with medium security settings, and I can connect to https://3dwarehouse.sketchup.com/ and https://www.trimble.com/ from it. From the Sketchup Help menu I can connect to everything, including License, except Check for Update which gives an “unable to obtain the latest version information. (possibly a different issue)” Attempting to connect to the 3D Warehouse results in “Could not connect to the 3D Warehouse.” I get a similar error when trying to connect to the Sketchucation Extension Store. Likewise geo-location is a no-go.

This a home machine with no proxy’s. I’ve attempted to connect with Windows Firewall off and on. I’ve added firewall inbound port rules to allow ports 80, 8080, and 443. I’ve edited the i18n.dat file so ONLINE_TEST_URL=http://cisco.com. I’ve disabled virus protection. I’ve emptied the browser cache, deleted cookies, and flushed the dns cache. I’m not using a secure DNS server, and *.sketchup.com and *.trimble.com are trusted sites. I’ve deleted cookiejar.xml, but there was no session.dat file. I’ve followed all of the steps in Troubleshooting Connectivity Issues within SketchUp | SketchUp Help.

It’s odd that this behavior occured out of the blue. The only thing I’ve done recently that might account for it was disabling the World Wide Web Publishing service and installing Wampserver instead. I tried connecting with Wampserver on and off as well. No luck.