Truly reset the TCP/IP stack – Fix network/internet problems Updated 3/14/2021

Having connection issues and no viruses or malware?  Hardware ok?

Try typing the following at a command prompt as an administrator
(you can copy and paste the bold text below) to fully reset the TCP/IP Stack-

netsh winsock reset catalog
netsh interface ipv4 reset
netsh interface ipv6 reset
arp d
netsh winsock reset 
netsh int tcp reset
netsh int ip reset
netsh int ip delete neighbors
netsh int ip delete destinationcache
netsh int ip delete arpcache
ipconfig /flushDNS
ipconfig /registerDNS
ipconfig /displayDNS
NBTStat -R

Because you may have ports opened or your firewall has exceptions, the next command resets your firewall –  This is optional

netsh advfirewall reset

About TCAT Shelbyville IT Department

The Tennessee College of Applied Technology - is one of 46 institutions in the Tennessee Board of Regents System, the seventh largest system of higher education in the nation. This system comprises six universities, fourteen community colleges, and twenty-six Applied Technology Colleges.
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