Yes, we can log in our account in VS.
For your problem, you can check document How to sign in to Visual Studio .
And you can first perform a thorough uninstall for Xamarin for Visual Studio, for more details, you can check:
https://docs.microsoft.com/en-us/xamarin/cross-platform/troubleshooting/questions/uninstall-xamarin-vs
Hope it can help you.
Answers
You can first double-check that the certain endpoints are accessible from your computer.
For more details, you can check:
https://docs.microsoft.com/en-us/xamarin/get-started/installation/firewall
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As you can see I have turned off firewall so I think the problem is not on my side.
Did this problem come up before, or is it just today?
Have you made any changes ?
You can first try restart your computer and Visual Studio.
This is the first time I use Xamarin to make my android apps.
I tried to install Xamarin Studio again and repair VS but that didn't help.
Can U log in to your Xamarin account in VS?
Is there anyway to rebuild my project without logging in?
Yes, we can log in our account in VS.
For your problem, you can check document How to sign in to Visual Studio .
And you can first perform a thorough uninstall for Xamarin for Visual Studio, for more details, you can check:
https://docs.microsoft.com/en-us/xamarin/cross-platform/troubleshooting/questions/uninstall-xamarin-vs
Hope it can help you.
Any updates?
Thanks @jezh My problem has been solved. I forget to share result. I uninstalled VS and Xamarin as you mentioned and reinstalled them and now it's working.