Model Handbook

ASUS RT-AX86U A device cannot connect to the router over Wi-Fi

Cause 1 of 3The device is out of range. Source: 6.2 FAQs: The client cannot establish a wireless connection with the router, p. 110

First checkMove the router closer to the wireless client.

Causes and checks

  1. The device is out of range. Source: 6.2 FAQs: The client cannot establish a wireless connection with the router, p. 110

    1. Move the router closer to the wireless client.
    2. Adjust the router antennas to the best direction.

  2. The DHCP server is disabled. Source: 6.2 FAQs: The client cannot establish a wireless connection with the router, p. 110

    1. Open General > Network Map > Clients and search for the device.
    2. If the device is missing, go to Advanced Settings > LAN > DHCP Server, Basic Config, and select Yes for Enable the DHCP Server.

  3. The SSID is hidden. Source: 6.2 FAQs: The client cannot establish a wireless connection with the router, p. 111

    1. Go to Advanced Settings > Wireless > General, select No for Hide SSID and Auto for Control Channel.

Service

If the checks above do not clear it, contact ASUS Technical Support, asus.com/support/. ASUS support site. Source: 6 Troubleshooting, p. 106

Other RT-AX86U problems

Sources

  1. User Guide, RT-AX86U Wireless-AX5700 Dual-band Gigabit Router. ASUSTeK Computer Inc. Document E17317, revision First Edition, September 2020, 2020-09, 127 pages, en-US. dlcdnets.asus.com (PDF). Listed on the manufacturer's support page. Retrieved 13 November 2026.

Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.

Applies to
RT-AX86U. Global.
Source
User Guide, RT-AX86U Wireless-AX5700 Dual-band Gigabit Router, E17317 revision First Edition, September 2020, 2020-09
Last verified
Handbook
ASUS RT-AX86U AX5700 Wi-Fi 6 gaming router in Routers; all ASUS handbooks