World of Warcraft — errors & fixes

Lag spikes / login errors (BLZBNTAGT)

• WoW lag spikes — Switch to a wired Ethernet connection and flush your DNS with ipconfig /flushdns, then check Blizzard's server status page to rule out a server-side outage before changing any settings.
• WoW login errors (BLZBNTAGT, stuck at login) — Run ipconfig /flushdns, switch to Google DNS (8.8.8.8), and check Blizzard's server status page first — most BLZBNTAGT login errors are network/DNS or server-side issues, not broken installs.