Network errors
34 errors. Choose the message that matches your computer.
NETIO-ERROR
A network driver or hardware caused an I/O communication error. It's also often linked to damaged ethernet cable or faulty port.
NetworkDNS-RESOLUTION-FAIL
PC cannot translate domain names to IP addresses. This usually traces back to bad DNS servers, problem with ISP and firewall blocking DNS.
NetworkWINSOCK-CORRUPT
Winsock catalog is corrupted, network connections are not working. Website not loading.
NetworkWIFI-DRIVER-CRASH
The wireless network adapter has stopped responding or is disconnecting. The usual suspects are outdated Wi-Fi driver, 2.4GHz channel interference, problem with Power Management and overheated Wi-Fi module.
NetworkSSL-HANDSHAKE-FAIL
The browser or application cannot establish an encrypted HTTPS connection. The usual suspects are bad system time, obsolete root certificates, firewall blocking TLS and antivirus SSL scan.
NetworkGATEWAY-UNAVAILABLE
The computer is connected to the network (LAN/Wi-Fi) but cannot access the Internet due to loss of connection with the default gateway (router). It's also often linked to incorrectly set static IP address in PC.
NetworkIP-ADDRESS-CONFLICT
Your device has been assigned the same IP address that is already being used by another device in the local network. The connection is not working.
NetworkDHCP-TIMEOUT
The computer connected to the network, but the router did not assign an IP address to it. It's also often linked to ISP Provider Error.
NetworkDNS-RES-FAIL
The browser cannot translate the web address to an IP address (DNS problem). Reports of Domain name resolution (DNS) failure usually describe a sudden crash, brief unresponsiveness, or a stop-code screen appearing…
NetworkIPV6-LOOP
Packets in an IPv6 network go around in a loop and never reach their destination. Common triggers are ISP Provider Error, stuck Router and IP address conflict.
NetworkWLAN-RST-LOOP
The Wi-Fi card keeps disconnecting and restarting due to a driver error. Typical causes include stuck Router and IP address conflict.
NetworkCBL-UNPL-FLS
The NIC reports 'Cable disconnected' even though the cable is physically plugged in. Common triggers are ISP Provider Error, corrupt network card driver, stuck Router and IP address conflict.
NetworkMAC-CONFLICT
Two devices on the network share the same physical MAC address. It's most often caused by ISP Provider Error and stuck Router.
NetworkTCP-IP-CORR
Windows internal networking layer is corrupt, no internet working. Common triggers are ISP Provider Error, stuck Router and IP address conflict.
NetworkWINSOCK-REG-ER
Application communication via internet sockets has completely crashed. Typical causes include ISP Provider Error, corrupt network card driver, stuck Router and IP address conflict.
NetworkVPN-TUN-DROP
The encrypted VPN connection was unexpectedly terminated by the firewall. Common triggers are ISP Provider Error, corrupt network card driver, stuck Router and IP address conflict.
NetworkQOS-THROTTLE
Quality of Service on the router or in Windows inadvertently limits the speed to a fraction of the maximum. Common triggers are ISP Provider Error, corrupt network card driver and IP address conflict.
NetworkIGMP-SNP-FAIL
A local switch or router does not properly filter multicast traffic, IPTV is interrupted. Typical causes include ISP Provider Error, corrupt network card driver and IP address conflict.
NetworkARP-POISON
An attempted Man-In-The-Middle attack has been detected on your network. Common triggers are ISP Provider Error, stuck Router and IP address conflict.
NetworkPRX-DET-STLL
The computer is stuck detecting proxy settings and is blocking web traffic. This usually traces back to ISP Provider Error, corrupt network card driver and IP address conflict.
NetworkMTU-MISMATCH
Different Maximum Transmission Unit settings cause fragmentation and brutal network slowdown. Typical causes include ISP Provider Error, stuck Router and IP address conflict.
NetworkWLAN-AUTO-FAIL
The wireless network configuration service has failed, the Wi-Fi icon has completely disappeared. The usual suspects are ISP Provider Error, stuck Router and IP address conflict.
NetworkNET-WIFI-NO-INTERNET
Wi-Fi reports a connection to the router, but Windows says that it cannot access the outside. This usually traces back to incorrectly set DNS on PC and outage by ISP.
NetworkWLAN-LIMITED
There is a yellow triangle with an exclamation mark on the Wi-Fi icon. The usual suspects are IP address conflict (multiple devices have the same IP) and the DHCP server in the router is stuck.
NetworkERR-SSL-PROTOCOL-ERR
The browser refuses to load the web page due to an HTTPS/SSL error. Typical causes include the date and time are incorrectly set on the computer, anti-virus programs (e.g.
NetworkWINSOCK-CORRUPT
The Internet connection works on the router, but Windows cannot establish any TCP/IP connections. Common triggers are faulty uninstall of VPN software (Cisco AnyConnect, Avast SecureLine), malware damaging the…
NetworkIPV6-LEAK-TUNNEL
Windows automatically creates a 6to4 or Teredo tunnel for IPv6, which causes the connection to slow down or fail. Work through the steps below in order.
NetworkDNS-REBINDING-ATTACK
The web browser or DNS cache has been poisoned, causing redirects to bad websites. The usual suspects are infected router with fake DNS records, malware modifying hosts file and public WiFi hotspot with manipulated DNS.
NetworkNET-DHCP-LEASE
The system failed to renew its IP address from the DHCP server. This can also stem from network switch misconfiguration.
NetworkWIFI_AUTOPREP_FAIL
The WLAN AutoConfig service (Wlansvc) failed to start, causing all wireless network adapters to become unresponsive and preventing the PC from scanning or connecting to Wi-Fi networks. Typical causes include corrupt…
NetworkDNS_PROBE_FINISHED_NXDOMAIN
A common browser error code displaying when the web browser cannot resolve a website's domain name because the DNS server reports that the domain name does not exist (Non-Existent Domain). It's most often caused by…
NetworkWIFI-DRIVER-BSOD
The wireless network adapter driver (commonly Intel AX series or Realtek RTL) causes a Blue Screen of Death. This typically manifests as SYSTEM_THREAD_EXCEPTION_NOT_HANDLED or DRIVER_IRQL_NOT_LESS_OR_EQUAL pointing…
NetworkNETWORK-BOOT-FAIL
The system is attempting to boot from the network via PXE (Preboot Execution Environment) and failing, resulting in delays or 'BOOTMGR is missing' errors. This occurs when the network adapter is set as the first boot…
NetworkIPV6-CONNECTIVITY-FAIL
The system has no IPv6 connectivity while IPv4 functions normally. Modern applications and services increasingly require IPv6 (Microsoft services, Google, gaming platforms).