I always get this error when trying Xcloud beta on browsers on Win 10, whether it's Edge or...

It could be there is an error on that page currently.

Usually if I get that error, I try using EDGE browser, this usually resolves the issue.

Thanks for the reply, but I'm not sure you read the initial question very carefully, or my reply.

This isn't about wired vs WiFi, or about the connection on the Xbox, it's about Win 10 on PC not getting to the internet properly when using Microsoft apps like Xbox beta, the Microsoft store and Edge. Everything else on the PC works fine, wired connections
almost always work fine, which is what this computer has always used, it's just that for whatever reason Microsoft apps don't connect to the internet very well when everything else does. And I've spent months watching Youtube videos and reading all the forums,
and there is a way to get it to work, whch requires rebooting the computer, but then ONLY the Microsoft apps work, not my web browsers or Steam games.

Are you trying to access your messages on the Xbox website, or in the Xbox App, or on the console, when you get that error?

If you are getting that in your browser when using the Xbox website, I found that using a different browser worked.

While Firefox and Edge couldn't show my messages, Google Chrome did the trick.

It could be extensions....could simply be that Chrome is a poor browser these days

Chrome has been good to me all these years plus you have to use Edge or Chrome for web browser xCloud.

it seems to only affect the Microsoft Edge Browser Xbox Cloud Gaming, when i use the PC Xbox App, it seems to save, but it keeps disconecting due to my internet, so i use the browser which for me is faster and doesnt lag as much as the app does, and this issue happens to every game on the web version of xcloud