A few days ago all the devices connected to our Archer C1900 started having hiccups in their connection — router and modem both seemed to be fine, even after reset, and our devices were still connected to the network, but no internet was coming through. Often turning off wireless and reconnecting on the devices is enough to reset, but it happens consistently.

I found a couple threads that mention this issue:

https://community.tp-link.com/en/home/forum/topic/179006

https://community.tp-link.com/en/business/forum/topic/179006?page=11

I don't see any firmware upgrade available for my particular device though. Is there any solution to keep this automatic language cycle from happening?

My system log looks the same - the router automatically cycles the language, and that seems to be when our biggest issues with connectivity happen.

2021-04-16 13:15:10 locale[20455]: <6> 283051 Language is changed to 'en_US'
2021-04-16 13:15:10 locale[20455]: <7> 283002 Explorer language is 'en_US'
2021-04-16 13:14:51 locale[20148]: <6> 283051 Language is changed to 'en_US'
2021-04-16 13:14:51 locale[20148]: <7> 283002 Explorer language is 'en_US'
2021-04-16 13:14:51 locale[20127]: <6> 283051 Language is changed to 'en_US'
2021-04-16 13:14:51 locale[20127]: <7> 283002 Explorer language is 'en_US'
2021-04-16 11:08:32 locale[20553]: <6> 283051 Language is changed to 'en_US'
2021-04-16 11:08:32 locale[20553]: <7> 283002 Explorer language is 'en_US'
2021-04-16 11:08:12 locale[20329]: <6> 283051 Language is changed to 'en_US'
2021-04-16 11:08:12 locale[20329]: <7> 283002 Explorer language is 'en_US'
2021-04-16 11:08:11 locale[20312]: <6> 283051 Language is changed to 'en_US'
2021-04-16 11:08:11 locale[20312]: <7> 283002 Explorer language is 'en_US'
2021-04-16 11:07:12 locale[19719]: <6> 283051 Language is changed to 'en_US'
2021-04-16 11:07:12 locale[19719]: <7> 283002 Explorer language is 'en_US'
2021-04-16 11:06:34 locale[19172]: <6> 283051 Language is changed to 'en_US'
2021-04-16 11:06:34 locale[19172]: <7> 283002 Explorer language is 'en_US'
2021-04-16 11:06:31 locale[19115]: <6> 283051 Language is changed to 'en_US'
2021-04-16 11:06:31 locale[19115]: <7> 283002 Explorer language is 'en_US'
2021-04-15 18:57:45 led-controller[916]: <3> 288753 Config importing failed
2021-04-15 06:43:23 led-controller[916]: <3> 288753 Config importing failed
2021-04-15 06:25:47 led-controller[916]: <3> 288753 Config importing failed
2021-04-15 00:41:13 led-controller[916]: <3> 288753 Config importing failed
2021-04-14 11:35:15 led-controller[916]: <3> 288753 Config importing failed
2021-04-13 06:59:12 led-controller[916]: <3> 288753 Config importing failed
2021-04-12 11:55:14 led-controller[916]: <3> 288753 Config importing failed
2021-04-11 09:32:43 led-controller[916]: <3> 288753 Config importing failed
2021-04-11 08:45:50 led-controller[916]: <3> 288753 Config importing failed
2016-11-17 00:00:31 led-controller[916]: <3> 288753 Config importing failed