Instructing the user to disconnect the Wi-Fi is the first action the technician should take if they suspect a rogue access point. A rogue access point is an unauthorized wireless network that could be used to intercept or manipulate network traffic, compromise security, or launch attacks. Disconnecting the Wi-Fi would prevent further exposure or damage to the user's device or data. Restarting the wireless adapter, launching the browser, or running the antivirus software are possible actions to take after disconnecting the Wi-Fi, but they are not as urgent or effective as the first step. Reference:
Official CompTIA learning resources CompTIA A+ Core 1 and Core 2, page 22 CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Cert Guide, page 456