Hi @Merlin Chan 0,
Welcome to Microsoft Q&A!
Please upgrade your Operating System to Windows 7 SP 1 and install Visual Studio 2015 Update 3 from the Visual Studio Subscriptions-Downloads page.
If you are using firewall or proxy server, please refer to the following link to fix the connection error:
Error: “The underlying connection was closed”
Sincerely,
Anna
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Thanks for your update.
Please open your IE browser and add those URLs to the trusted sites: going to Internet options > Security > Trusted sites > Sites to add those URLs to the zone.
上述的地址我之前已经加到了“受信任的站点”,但VS仍是显示不出登录界面。大师我该如何是好?请多多帮忙,万分感激!
Please close all running VS instances and delete all files of %localappdata%.Identityservice.
Then, relaunch your Visual Studio to sign in again.
If it doesn’t work, please reset your IE settings, and clean IE cache to try again.
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