Galaxy Tab S4 hifi 5.0 issue after Android 10 update

[vmfzjp]

Good afternoon,
I have the Galaxy TAB S4 that upgraded the system to version 10.0 and UI 2.1. After this update, the 2.4 ghz wifi network continued to work, but the 5.0 mhz network stopped working, the network being recognized, but it then shuts down. I already deleted the 2 networks and created it again, but the same problem continues on the 5.0 mhz network. I have also effected the wipe chache partion several times without success, as the problem remains.
How should I proceed to resolve this issue?

best regards

[Pugs1957]

Rebooting your router may help

[vmfzjp]

Good afternoon Pugs1957,

Before making this request for help, I had already done this process but unfortunately without success.

[vuurvlinder]

same here...

[vuurvlinder]

Just had a new update and guess what....wifi: fine, charging pongo dock: working . So it was a software issue! 

[vmfzjp]

The WI-FI problem was solved with the manufacturer's intervention under the warranty, but the problem of the tablet not connecting to the PC continues. The connection between the tablet and the PC's DEX application still does not work. If you turn on Note 10 Plus, DEX already works.
I can't understand where the error is.