I am having the issue described here https://community.sunrise.ch/d/29069-sunrise-internetbox-fiber-wifi-6-connect-probleme
I cannot connect to 5Ghz wifi with my laptop that has a Qualcomm WCN685x / Fastconnect6900 / NFA725A Wi-Fi 6E network card.
The current software version on the box is SG_SIB_05.008
Strangely enough it does connect without a problem to the 2.5 Ghz, but not 5 Ghz. The error message that shows in the logs is:
“A device failed to connect to SSID (…) because it provided incorrect login information”
The password is correct as it is able to connect on the 2.5 Ghz. If I change the device settings to 5 Ghz preferred, it just goes in a loop and never connects.
I have tried changing the authentication to wpa2 and removing special characters from the password, though not right away, now it seems to work, but this should not be the solution by weakening the security
I do not have this issue with other routers. I can connect to 5GHz wifi with wpa3 and special characters in the password without a problem.
I am pretty sure there is an issue on Internet box with encryption for 5Ghz