Hi,

I have a TP-Link Archer C80 router which approx. since last 2 months intermittently stops working. The light on the router remains green but no device is able to connect to the wifi and device which are connected over Ethernet are also not able to access the router web ui page so i can check the settings or download logs. I have tried factory reset but it didn't helped.

Although not 100% certain but I think it started happening after firmware update which i did few days before i started seeing this issue. Prior to the upgrade the router worked perfectly without any issues.

When the issue occurs the only solution is to poweroff and power on the router from the switch at the back of the router. Please help as I work from home and while i'm on calls, the issue causes the calls to drop.

Device Details:

Firmware Version: 1.14.0 Build 240617 Rel.39521n(5553)

Hardware Version: Archer C80 2.20

Variant: Archer C80 (IN)

ISP: Local provider

Connection Type: PPPoE

Logs (Although I can't download logs from UI when the issue happens as I can't get into the web UI but this is the log i collected after restarting the device)

##########################################################################
#                    Archer C80  System Log 
# Time = 2024-11-24 13:17:01 26210s
# H-Ver = Archer C80 2.20 : S-Ver = 1.14.0 Build 240617 Rel.39521n(5553)
# L = 192.168.2.1 : M = 255.255.255.0
# WAN = PPPoE : W = 172.16.12.12 : M = 255.255.255.255 : G = 45.250.226.23
# Cnt = 10624, Free = 10414, Busy = 210
##########################################################################
  0days, 00:00:07, [tmpd]register tmp app, type: 1
  0days, 00:00:07, [portal]portal init

  0days, 00:00:07, [lan]LAN: Set interface br-lan0 ip=192.168.2.1 netmask 255.255.255.0.
  0days, 00:00:07, [tmpd]register tmp app, type: 2
  0days, 00:00:09, [tmpd]register tmp app, type: 4
  0days, 00:00:18, [DSLite]Dslite disable
  0days, 00:00:19, [portal]portal not enabled

  0days, 00:00:19, [portal]portal stop

  0days, 00:00:19, [l2tpd]Unable to load config file

  0days, 00:00:19, [httpd]Http server start!
  0days, 00:00:19, [httpd]Https server start!
  0days, 00:00:22, [wan]Wan ethernet port plug on.
  0days, 00:00:23, [pppoe]try special dial type 0
  0days, 00:00:23, [pppoe]TX PADI
  0days, 00:00:23, [pppoe]RX PADO, AC-NAME=Lohgaon-226.130, AC-MAC=40-8d-5c-26-a5-60
  0days, 00:00:23, [pppoe]TX PADR
  0days, 00:00:23, [pppoe]RX PADS[session=e185]
  0days, 00:00:23, [dhcps]Send OFFER with ip 192.168.2.141.
  0days, 00:00:23, [dhcps]Send ACK to 192.168.2.141.
  0days, 00:00:24, [ppp][LCP]RX CONFIGURE_REQUEST
  0days, 00:00:24, [ppp][LCP]TX CONFIGURE_REQUEST
  0days, 00:00:24, [ppp][LCP]TX CONFIGURE_ACK[mru=1492, auth=C023/5, magic=E550D643]
  0days, 00:00:24, [ppp][LCP]RX CONFIGURE_ACK[mru=1480, magic=00007123]
  0days, 00:00:24, [ppp][PAP]TX AUTHENTICATION_REQUEST
  0days, 00:00:24, [ppp][PAP]RX AUTHENTICATION_ACK
  0days, 00:00:24, [ppp][IPCP]RX CONFIGURE_REQUEST
  0days, 00:00:24, [ppp][IPCP]TX CONFIGURE_REQUEST
  0days, 00:00:24, [ppp][IPCP]TX CONFIGURE_ACK[ip=45.250.226.23]
  0days, 00:00:24, [ppp][IPV6CP] RX something, but we will not negotiate it.
  0days, 00:00:24, [ppp][LCP]TX PROTOCOL_REJECT
  0days, 00:00:24, [ppp][IPCP]RX CONFIGURE_NAK
  0days, 00:00:24, [ppp][IPCP]TX CONFIGURE_REQUEST
  0days, 00:00:24, [ppp][IPCP]RX CONFIGURE_ACK[ip=172.16.12.12, dns=103.17.159.50/8.8.8.8]
  0days, 00:00:25, [dhcps]Send OFFER with ip 192.168.2.200.
  0days, 00:00:25, [dhcps]Send OFFER with ip 192.168.2.165.
  0days, 00:00:25, [dhcps]Send ACK to 192.168.2.200.
  0days, 00:00:25, [pppoe]ppp0 set localIp 172.16.12.12 remoteIp 45.250.226.23 mtu 1480
  0days, 00:00:25, [wan]advanced ddns -wanChanged
  0days, 00:00:25, [wan]systool sntpc -sntpRequest
  0days, 00:00:25, [dhcps]Send ACK to 192.168.2.165.
  0days, 00:00:26, [dhcps]Lease host name not found.
  0days, 00:00:26, [dnsproxy]Register Dns Detect
  0days, 00:00:26, [dnsproxy]Register primary = 0x329f1167, secondary = 0x8080808
  0days, 00:00:26, [inetd]INETD: select error, abort.
  0days, 00:00:26, [cwmp]cwmp is not start
  0days, 00:00:26, [l2tpd]Unable to load config file

  0days, 00:00:26, [cwmp]cwmp is not start
  0days, 00:00:27, [dhcps]Lease host name not found.
  0days, 00:00:27, [dhcps]Send OFFER with ip 192.168.2.223.
  0days, 00:00:28, [dhcps]Lease host name not found.
  0days, 00:00:28, [dhcps]Send ACK to 192.168.2.223.
  0days, 00:00:31, [dhcps]Lease host name not found.
  0days, 00:00:31, [dhcps]Send OFFER with ip 192.168.2.219.
  0days, 00:00:32, [dhcps]Send OFFER with ip 192.168.2.208.
  0days, 00:00:32, [dhcps]Lease host name not found.
  0days, 00:00:32, [dhcps]Send ACK to 192.168.2.219.
  0days, 00:00:32, [dhcps]Send ACK to 192.168.2.208.
  0days, 00:00:33, [dhcps]Send ACK to 192.168.2.141.
  0days, 00:02:41, [dhcps]Send OFFER with ip 192.168.2.213.
  0days, 00:02:41, [dhcps]Send OFFER with ip 192.168.2.213.
  0days, 00:02:41, [dhcps]Send ACK to 192.168.2.213.
  0days, 00:54:54, [dhcps]Lease host name not found.
  0days, 00:54:54, [dhcps]Send OFFER with ip 192.168.2.196.
  0days, 00:54:55, [dhcps]Lease host name not found.
  0days, 00:54:55, [dhcps]Send ACK to 192.168.2.196.
  0days, 01:00:06, [dhcps]Lease host name not found.
  0days, 01:00:32, [dhcps]Lease host name not found.
  0days, 01:01:09, [dhcps]Lease host name not found.
  0days, 01:23:46, [dhcps]Lease host name not found.
  0days, 01:55:24, [dhcps]Send OFFER with ip 192.168.2.231.
  0days, 01:55:24, [dhcps]Send OFFER with ip 192.168.2.231.
  0days, 01:55:24, [dhcps]Send ACK to 192.168.2.231.
  0days, 02:00:05, [dhcps]Lease host name not found.
  0days, 02:00:33, [dhcps]Lease host name not found.
  0days, 02:05:35, [dhcps]Send OFFER with ip 192.168.2.213.
  0days, 02:05:35, [dhcps]Send OFFER with ip 192.168.2.213.
  0days, 02:05:35, [dhcps]Send ACK to 192.168.2.213.
  0days, 02:17:54, [dhcps]Lease host name not found.
  0days, 02:23:46, [dhcps]Lease host name not found.
  0days, 02:46:31, [dhcps]Lease host name not found.
  0days, 03:00:33, [dhcps]Lease host name not found.
  0days, 03:00:54, [dhcps]Lease host name not found.
  0days, 03:18:43, [dhcps]Lease host name not found.
  0days, 03:23:58, [dhcps]Send OFFER with ip 192.168.2.132.
  0days, 03:23:58, [dhcps]Send OFFER with ip 192.168.2.132.
  0days, 03:23:58, [dhcps]Send ACK to 192.168.2.132.
  0days, 03:46:31, [dhcps]Lease host name not found.
  0days, 04:00:33, [dhcps]Lease host name not found.
  0days, 04:00:59, [dhcps]Lease host name not found.
  0days, 04:25:01, [dhcps]Send OFFER with ip 192.168.2.172.
  0days, 04:46:31, [dhcps]Lease host name not found.
  0days, 05:00:34, [dhcps]Lease host name not found.
  0days, 05:00:45, [dhcps]Lease host name not found.
  0days, 05:11:36, [dhcps]Send OFFER with ip 192.168.2.172.
  0days, 05:31:21, [dhcps]Send OFFER with ip 192.168.2.172.
  0days, 05:31:24, [dhcps]Send OFFER with ip 192.168.2.172.
  0days, 05:31:37, [dhcps]Send OFFER with ip 192.168.2.172.
  0days, 05:31:55, [dhcps]Send OFFER with ip 192.168.2.172.
  0days, 05:43:49, [dhcps]Send OFFER with ip 192.168.2.132.
  0days, 05:43:49, [dhcps]Send OFFER with ip 192.168.2.132.
  0days, 05:43:49, [dhcps]Send ACK to 192.168.2.132.
  0days, 05:46:31, [dhcps]Lease host name not found.
  0days, 06:00:30, [dhcps]Lease host name not found.
  0days, 06:00:34, [dhcps]Lease host name not found.
  0days, 06:46:31, [dhcps]Lease host name not found.
  0days, 07:00:35, [dhcps]Lease host name not found.
  0days, 07:00:36, [dhcps]Lease host name not found.
  0days, 07:00:37, [dhcps]Send OFFER with ip 192.168.2.197.
  0days, 07:00:37, [dhcps]Send ACK to 192.168.2.197.
  0days, 07:10:39, [dhcps]Send OFFER with ip 192.168.2.213.
  0days, 07:10:39, [dhcps]Send OFFER with ip 192.168.2.213.
  0days, 07:10:39, [dhcps]Send ACK to 192.168.2.213.
  0days, 07:14:42, [dhcps]Send OFFER with ip 192.168.2.172.
  0days, 07:14:44, [dhcps]Send OFFER with ip 192.168.2.172.

QM error check1! do recovery.
 

Please let me know if any additional details are required.

Thanks in advance.