Failed to synchronize ****.com teams with Apple Developer Portal.No such host is known. (Xamarin project).?

Error : Failed to synchronize ****.com teams with Apple Developer Portal.No such host is known.

Apple developer account was working fine but on a sudden showing this error while opening Apple developer accounts from preferences

Path--> Visual Studio - Preferences - Apple developer Accounts

Visual studio 2019 for mac-version 8.3.8(build 8) Xcode- 11.2

Solution

It's a bug with Visual Studio for Mac. See this "closed" issue or a related one on Microsoft's Visual Studio website as well as a thread on Xamarin forums.

The "closed" issue page mentions that as a workaround, you might be able to manually provision by:

Quit Visual Studio for Mac
Launch XCode, select Preferences -> Accounts and "Download Manual Profiles" for the account you'd like to use (and/or remove and re-add the account)
- In my experience, you might even need to create, build and run on a simulator or physical device a dummy project with the same bundle identifier as your Xamarin iOS project
Quit XCode
Relaunch Visual Studio for Mac
Open the Info.plist, select Manual Provisioning and press the "Bundle Signing Options..." button to select the signing identity that hopefully imported correctly