Archer C9 keeps disconnecting Wi-Fi

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Archer C9 keeps disconnecting Wi-Fi

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Dimol

2021-03-13 13:43:04

Posts: 1

Helpful: 0

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Registered: 2021-03-13

Archer C9 keeps disconnecting Wi-Fi

2021-03-13 13:43:04

Model: Archer C9

Hardware Version: V5

Firmware Version: 1.2.4 Build 20190403 rel.63869(4555)

Hi! I've got a problem that my Archer C9 keeps disconnecting Wi-Fi just all the time. It is happening on both 2.4 and 5GHz. It's happening on any devices - smartphone just next to the router, MiBox that's 2.5 meter away (no walls between), I'm just loosing my patience. Did anyone of you encounter such problem and manage to solve it? I'll include some logs:

Hardware Version: ArcherC9 v5.0
Software Version: 1.2.4 Build 20190403 rel.63869

2021-03-13 14:35:50 locale[26442]: <6> 283051 Language is changed to 'en_US'
2021-03-13 14:35:47 locale[26297]: <6> 283051 Language is changed to 'en_US'
2021-03-13 14:35:46 locale[26272]: <6> 283051 Language is changed to 'en_US'
2021-03-13 14:23:49 locale[8080]: <6> 283051 Language is changed to 'en_US'
2021-03-13 14:23:49 locale[8045]: <6> 283051 Language is changed to 'en_US'
2021-03-13 14:20:06 locale[1756]: <6> 283051 Language is changed to 'pl_PL'
2021-03-13 14:20:06 locale[1756]: <7> 283002 Explorer language is 'pl_PL'
2021-03-13 14:20:03 locale[1577]: <6> 283051 Language is changed to 'pl_PL'
2021-03-13 14:20:03 locale[1577]: <7> 283002 Explorer language is 'pl_PL'
2021-03-13 14:20:02 locale[1560]: <6> 283051 Language is changed to 'pl_PL'
2021-03-13 14:20:02 locale[1560]: <7> 283002 Explorer language is 'pl_PL'
2021-03-13 14:16:45 locale[29173]: <6> 283051 Language is changed to 'pl_PL'
2021-03-13 14:16:45 locale[29173]: <7> 283002 Explorer language is 'pl_PL'
2021-03-13 12:49:12 led-controller[940]: <6> 288051 Start to run WIFI5G_ON
2021-03-13 12:49:12 led-controller[940]: <7> 288004 WIFI5G_ON is found
2021-03-13 12:49:12 led-controller[940]: <7> 288003 Led rule name is WIFI5G_ON
2021-03-13 12:49:12 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 12:49:12 led-controller[940]: <6> 288051 Start to run WIFI2G_ON
2021-03-13 12:49:12 led-controller[940]: <7> 288004 WIFI2G_ON is found
2021-03-13 12:49:12 led-controller[940]: <7> 288003 Led rule name is WIFI2G_ON
2021-03-13 12:49:12 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 12:49:12 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-13 12:49:12 led-controller[940]: <7> 288004 NIGHT is found
2021-03-13 12:49:12 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-13 12:49:12 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 10:41:29 led-controller[940]: <6> 288051 Start to run WIFI5G_ON
2021-03-13 10:41:29 led-controller[940]: <7> 288004 WIFI5G_ON is found
2021-03-13 10:41:29 led-controller[940]: <7> 288003 Led rule name is WIFI5G_ON
2021-03-13 10:41:29 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 10:41:29 led-controller[940]: <6> 288051 Start to run WIFI2G_ON
2021-03-13 10:41:29 led-controller[940]: <7> 288004 WIFI2G_ON is found
2021-03-13 10:41:29 led-controller[940]: <7> 288003 Led rule name is WIFI2G_ON
2021-03-13 10:41:29 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 10:41:29 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-13 10:41:29 led-controller[940]: <7> 288004 NIGHT is found
2021-03-13 10:41:29 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-13 10:41:29 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 08:33:42 led-controller[940]: <6> 288051 Start to run WIFI5G_ON
2021-03-13 08:33:42 led-controller[940]: <7> 288004 WIFI5G_ON is found
2021-03-13 08:33:42 led-controller[940]: <7> 288003 Led rule name is WIFI5G_ON
2021-03-13 08:33:42 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 08:33:42 led-controller[940]: <6> 288051 Start to run WIFI2G_ON
2021-03-13 08:33:42 led-controller[940]: <7> 288004 WIFI2G_ON is found
2021-03-13 08:33:42 led-controller[940]: <7> 288003 Led rule name is WIFI2G_ON
2021-03-13 08:33:42 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 08:33:42 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-13 08:33:42 led-controller[940]: <7> 288004 NIGHT is found
2021-03-13 08:33:42 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-13 08:33:42 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 07:00:00 led-controller[940]: <6> 288051 Start to run WIFI5G_ON
2021-03-13 07:00:00 led-controller[940]: <7> 288004 WIFI5G_ON is found
2021-03-13 07:00:00 led-controller[940]: <7> 288003 Led rule name is WIFI5G_ON
2021-03-13 07:00:00 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 07:00:00 led-controller[940]: <6> 288051 Start to run WIFI2G_ON
2021-03-13 07:00:00 led-controller[940]: <7> 288004 WIFI2G_ON is found
2021-03-13 07:00:00 led-controller[940]: <7> 288003 Led rule name is WIFI2G_ON
2021-03-13 07:00:00 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 07:00:00 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-13 07:00:00 led-controller[940]: <7> 288004 NIGHT is found
2021-03-13 07:00:00 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-13 07:00:00 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 06:26:00 led-controller[940]: <6> 288051 Start to run WIFI5G_OFF
2021-03-13 06:26:00 led-controller[940]: <7> 288004 WIFI5G_OFF is found
2021-03-13 06:26:00 led-controller[940]: <7> 288003 Led rule name is WIFI5G_OFF
2021-03-13 06:26:00 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 06:26:00 led-controller[940]: <6> 288051 Start to run WIFI2G_OFF
2021-03-13 06:26:00 led-controller[940]: <7> 288004 WIFI2G_OFF is found
2021-03-13 06:26:00 led-controller[940]: <7> 288003 Led rule name is WIFI2G_OFF
2021-03-13 06:26:00 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 06:26:00 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-13 06:26:00 led-controller[940]: <7> 288004 NIGHT is found
2021-03-13 06:26:00 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-13 06:26:00 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 04:18:18 led-controller[940]: <6> 288051 Start to run WIFI5G_OFF
2021-03-13 04:18:18 led-controller[940]: <7> 288004 WIFI5G_OFF is found
2021-03-13 04:18:18 led-controller[940]: <7> 288003 Led rule name is WIFI5G_OFF
2021-03-13 04:18:18 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 04:18:18 led-controller[940]: <6> 288051 Start to run WIFI2G_OFF
2021-03-13 04:18:18 led-controller[940]: <7> 288004 WIFI2G_OFF is found
2021-03-13 04:18:18 led-controller[940]: <7> 288003 Led rule name is WIFI2G_OFF
2021-03-13 04:18:18 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 04:18:18 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-13 04:18:18 led-controller[940]: <7> 288004 NIGHT is found
2021-03-13 04:18:18 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-13 04:18:18 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 02:10:37 led-controller[940]: <6> 288051 Start to run WIFI5G_OFF
2021-03-13 02:10:37 led-controller[940]: <7> 288004 WIFI5G_OFF is found
2021-03-13 02:10:37 led-controller[940]: <7> 288003 Led rule name is WIFI5G_OFF
2021-03-13 02:10:37 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 02:10:37 led-controller[940]: <6> 288051 Start to run WIFI2G_OFF
2021-03-13 02:10:37 led-controller[940]: <7> 288004 WIFI2G_OFF is found
2021-03-13 02:10:37 led-controller[940]: <7> 288003 Led rule name is WIFI2G_OFF
2021-03-13 02:10:37 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 02:10:37 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-13 02:10:37 led-controller[940]: <7> 288004 NIGHT is found
2021-03-13 02:10:37 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-13 02:10:37 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 00:02:56 led-controller[940]: <6> 288051 Start to run WIFI5G_OFF
2021-03-13 00:02:56 led-controller[940]: <7> 288004 WIFI5G_OFF is found
2021-03-13 00:02:56 led-controller[940]: <7> 288003 Led rule name is WIFI5G_OFF
2021-03-13 00:02:56 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 00:02:56 led-controller[940]: <6> 288051 Start to run WIFI2G_OFF
2021-03-13 00:02:56 led-controller[940]: <7> 288004 WIFI2G_OFF is found
2021-03-13 00:02:56 led-controller[940]: <7> 288003 Led rule name is WIFI2G_OFF
2021-03-13 00:02:56 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-13 00:02:55 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-13 00:02:55 led-controller[940]: <7> 288004 NIGHT is found
2021-03-13 00:02:55 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-13 00:02:55 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 21:55:11 led-controller[940]: <6> 288051 Start to run WIFI5G_OFF
2021-03-12 21:55:11 led-controller[940]: <7> 288004 WIFI5G_OFF is found
2021-03-12 21:55:11 led-controller[940]: <7> 288003 Led rule name is WIFI5G_OFF
2021-03-12 21:55:11 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 21:55:11 led-controller[940]: <6> 288051 Start to run WIFI2G_OFF
2021-03-12 21:55:11 led-controller[940]: <7> 288004 WIFI2G_OFF is found
2021-03-12 21:55:11 led-controller[940]: <7> 288003 Led rule name is WIFI2G_OFF
2021-03-12 21:55:11 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 21:55:11 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-12 21:55:10 led-controller[940]: <7> 288004 NIGHT is found
2021-03-12 21:55:10 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-12 21:55:10 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 20:00:00 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-12 20:00:00 led-controller[940]: <7> 288004 NIGHT is found
2021-03-12 20:00:00 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-12 20:00:00 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 19:47:28 led-controller[940]: <6> 288051 Start to run WIFI5G_ON
2021-03-12 19:47:28 led-controller[940]: <7> 288004 WIFI5G_ON is found
2021-03-12 19:47:28 led-controller[940]: <7> 288003 Led rule name is WIFI5G_ON
2021-03-12 19:47:28 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 19:47:28 led-controller[940]: <6> 288051 Start to run WIFI2G_ON
2021-03-12 19:47:28 led-controller[940]: <7> 288004 WIFI2G_ON is found
2021-03-12 19:47:28 led-controller[940]: <7> 288003 Led rule name is WIFI2G_ON
2021-03-12 19:47:28 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 19:47:28 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-12 19:47:28 led-controller[940]: <7> 288004 NIGHT is found
2021-03-12 19:47:28 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-12 19:47:28 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 17:39:46 led-controller[940]: <6> 288051 Start to run WIFI5G_ON
2021-03-12 17:39:46 led-controller[940]: <7> 288004 WIFI5G_ON is found
2021-03-12 17:39:46 led-controller[940]: <7> 288003 Led rule name is WIFI5G_ON
2021-03-12 17:39:46 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 17:39:46 led-controller[940]: <6> 288051 Start to run WIFI2G_ON
2021-03-12 17:39:46 led-controller[940]: <7> 288004 WIFI2G_ON is found
2021-03-12 17:39:46 led-controller[940]: <7> 288003 Led rule name is WIFI2G_ON
2021-03-12 17:39:46 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 17:39:46 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-12 17:39:46 led-controller[940]: <7> 288004 NIGHT is found
2021-03-12 17:39:46 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-12 17:39:46 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 15:31:58 led-controller[940]: <6> 288051 Start to run WIFI5G_ON
2021-03-12 15:31:58 led-controller[940]: <7> 288004 WIFI5G_ON is found
2021-03-12 15:31:58 led-controller[940]: <7> 288003 Led rule name is WIFI5G_ON
2021-03-12 15:31:58 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 15:31:57 led-controller[940]: <6> 288051 Start to run WIFI2G_ON
2021-03-12 15:31:57 led-controller[940]: <7> 288004 WIFI2G_ON is found
2021-03-12 15:31:57 led-controller[940]: <7> 288003 Led rule name is WIFI2G_ON
2021-03-12 15:31:57 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 15:31:57 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-12 15:31:57 led-controller[940]: <7> 288004 NIGHT is found
2021-03-12 15:31:57 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-12 15:31:57 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 13:24:11 led-controller[940]: <6> 288051 Start to run WIFI5G_ON
2021-03-12 13:24:11 led-controller[940]: <7> 288004 WIFI5G_ON is found
2021-03-12 13:24:11 led-controller[940]: <7> 288003 Led rule name is WIFI5G_ON
2021-03-12 13:24:11 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 13:24:11 led-controller[940]: <6> 288051 Start to run WIFI2G_ON
2021-03-12 13:24:11 led-controller[940]: <7> 288004 WIFI2G_ON is found
2021-03-12 13:24:11 led-controller[940]: <7> 288003 Led rule name is WIFI2G_ON
2021-03-12 13:24:11 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 13:24:11 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-12 13:24:11 led-controller[940]: <7> 288004 NIGHT is found
2021-03-12 13:24:11 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-12 13:24:11 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 11:16:24 led-controller[940]: <6> 288051 Start to run WIFI5G_ON
2021-03-12 11:16:24 led-controller[940]: <7> 288004 WIFI5G_ON is found
2021-03-12 11:16:24 led-controller[940]: <7> 288003 Led rule name is WIFI5G_ON
2021-03-12 11:16:24 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 11:16:24 led-controller[940]: <6> 288051 Start to run WIFI2G_ON
2021-03-12 11:16:24 led-controller[940]: <7> 288004 WIFI2G_ON is found
2021-03-12 11:16:24 led-controller[940]: <7> 288003 Led rule name is WIFI2G_ON
2021-03-12 11:16:24 led-controller[940]: <7> 288001 Receive data length = 132
2021-03-12 11:16:24 led-controller[940]: <6> 288051 Start to run NIGHT
2021-03-12 11:16:24 led-controller[940]: <7> 288004 NIGHT is found
2021-03-12 11:16:24 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-12 11:16:24 led-controller[940]: <7> 288001 Receive data length = 132

Is looks like after:

"2021-03-13 12:49:12 led-controller[940]: <7> 288003 Led rule name is NIGHT
2021-03-13 12:49:12 led-controller[940]: <7> 288001 Receive data length = 132"

the Wi-Fi is being disconnected. Thanks in advance.

1 Reply

Kevin_Z

2021-03-16 03:34:07

Posts: 21782

Helpful: 5161

Solutions: 2575

Stories: 21

Registered: 2018-12-24

Re:Archer C9 keeps disconnecting Wi-Fi

2021-03-16 03:34:07

@Dimol

Can you please confirm if you can get a stable connection if you connect a computer to the C9 LAN with an Ethernet cable? BTW, who is your ISP?

When the devices disconnect from the Wi-Fi, please confirm if they are disconnected from the network completely, or they are still showing connected but no internet access? If it is the former, are you able to connect back? How did you recover the connection?

It is suggested to install and run a Wi-Fi analyzer to find a clear channel for both the 2.4G and 5G network, then change the channel width to 40MHz for 5G and 20MHz for 2.4G, reboot the router and reconnect to the wireless network, then confirm.

How many devices are connected to the wireless network, are they experiencing the same issue at the same time? Or they are disconnecting randomly?

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router Archer BE800 New Firmware Added Support for EasyMesh in AP Mode, DoH&DoT, and 3-Band MLO Connection Archer AX90 New Firmware Added Support for EasyMesh and Ethernet Backhaul If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.

Archer C9 keeps disconnecting Wi-Fi

Archer C9 keeps disconnecting Wi-Fi

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