I have one computer running Windows 10 Professional x64 that seeming suddenly developed a problem connecting to the router's GUI. It does not matter which browser I use, Firefox, Chrome, IE, Edge. They all cannot connect. Chrome gives me an "ERR_CONNECTION_RESET". IE gives me "This page can’t be displayed". Edge gives me "Hmm, we can't reach this page. Firefox gives me "The connection was reset". Other computers on my network can connect without issue and are running the same OS as the computer in question. I have tried both wired and wireless connections. My router is a SonicWall 250M. I have the same Kaspersky antivirus on my computers. I have disabled (but not uninstalled) Kaspersky on the computer in question without any change in outcome. I have changed the computers IP address without any change in outcome. The HOST file on my computer has not changed and remains the windows default configuration. Have flushed DNS, reset winsock, , reset tcpip stack, updated drivers, complete in-depth scan with Kaspersky without anything being found. I can access the wireless AP GUI, my network printers GUI, and my NAS GUI on my network. I am hoping to resolve this without having to do a clean reinstall of windows.