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However, after resetting the TCP/IP stack I am now able to enter manual settings and connect to the network here at the office. Then I tried these commands that others suggested: Netsh int tcp set global autotuninglevel=disabled I then tried the following commands on the command line, run as administrator, to reset the TCP/IP stack: I even deleted both Ethernet and wireless adapters and had Win 10 reinstall them. I tried all of the usual things like cold reboot, disable and re-enable adapter, etc. I get the same problem with Ethernet, the built-in wireless and even my Verizon Jetpack - no network or internet connection. I have had a Dell M4500 since 2011 and it has performed rock solid until yesterday when it would not connect to the network.
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