Model : RE450

Hardware Version :

Firmware Version : 1.0.0 Build 20161202 Rel. 56846

ISP : --

Hello, I have this very same issue.

I am in Sweden in the EU using the RE450 with an ASUS RT-AC68U router. My RE450 BIOS is version 1.0.0 Build 20161202 Rel. 56846. Updated from the EU-region download section of the TP-Link website. It seems EU has not received the latest possible patch, available in the US and other regions.

2.4GHz is connecting but has some severe stability issues. The connection seems to drop out, frequently.
5.0GHz can be detected and selected using the RE450 network scanner but the RE450 is not connecting to this network.

In the log I get hundreds of lines such as these:
0 days 00:12:38 WIRELESS ERROR 2.4/5GHz failed the connection to the front end, due to: Connecting timed out.
0 days 00:13:06 WIRELESS ERROR 2.4/5GHz failed the connection to the front end, due to: Connecting timed out.
0 days 00:13:06 WIRELESS ERROR 2.4/5GHz failed the connection to the front end, due to: Connecting timed out.
0 days 00:13:06 WIRELESS ERROR 2.4/5GHz failed the connection to the front end, due to: Connecting timed out.
0 days 00:13:06 WIRELESS ERROR 2.4/5GHz failed the connection to the front end, due to: Connecting timed out.
0 days 00:13:06 WIRELESS ERROR 2.4/5GHz failed the connection to the front end, due to: Connecting timed out.
0 days 00:13:06 WIRELESS ERROR 2.4/5GHz failed the connection to the front end, due to: Connecting timed out.

I have tried:
- Experimenting with different 5GHz channels such as 40, 44, 48 etc etc.
- Experimenting with different channel bandwidth such as 20, 40, 80 MHz
- Changing the SSID names and passwords of all channels

Nothing is working to remedy the issue above.

Please help.

Best regards,
G