Win_Network_DNSFlushAndStackRepair
🪟PowerShell🍻Script Share
A full DNS/network stack repair script for when the usual "restart the router" advice isn't cutting it. RMM-agnostic, works standalone too.
What it does:
Flushes DNS client cache + restarts DNS Client service
Clears ARP cache + reloads NetBIOS name cache
Resets Winsock catalog
Resets TCP/IP stack
Releases/renews DHCP lease (scoped to active, DHCP-enabled adapters only — won't touch static or disconnected NICs)
Re-registers DNS
Notes:
Needs an elevated console (it checks and bails cleanly if you're not admin)
Flags known Windows quirks (like the protected Dnscache service) as warnings instead of false-failing
Exit codes for RMM/monitoring: 0 clean, 1 reboot needed to fully apply, 2 real failure
-SkipDhcpRenew and -Detailed switches if you want to tweak behavior
Tested clean on a live Win11 box (Winsock + TCP/IP reset both applied, correctly flagged pending reboot). Would love more real-world runs before I call it final — let me know if it breaks anything or if you hit an edge case I didn't account for.
What it does:
Flushes DNS client cache + restarts DNS Client service
Clears ARP cache + reloads NetBIOS name cache
Resets Winsock catalog
Resets TCP/IP stack
Releases/renews DHCP lease (scoped to active, DHCP-enabled adapters only — won't touch static or disconnected NICs)
Re-registers DNS
Notes:
Needs an elevated console (it checks and bails cleanly if you're not admin)
Flags known Windows quirks (like the protected Dnscache service) as warnings instead of false-failing
Exit codes for RMM/monitoring: 0 clean, 1 reboot needed to fully apply, 2 real failure
-SkipDhcpRenew and -Detailed switches if you want to tweak behavior
Tested clean on a live Win11 box (Winsock + TCP/IP reset both applied, correctly flagged pending reboot). Would love more real-world runs before I call it final — let me know if it breaks anything or if you hit an edge case I didn't account for.
