登录后，30天的试用期就会消失!

“如果你已经登录了，注销，然后再登录。” -b1nary.atr0phy

记住，如果你是在私人红色与代理，你必须注销和重新登录与外部WIFI为例。

I had this problem. Signing in or pressing the "Check for an updated license" link did not work for me. My solution was to restart Visual Studio, try again (sign in and check for license). Restart Visual Studio, try again. I had to do this several times and then it worked! (I also tried pressing the "File" menu that is available for a short period of time before the annoying request window appears again.) Maybe you just don't get connected to the server or the server itself doesn't update its database fast enough.

为了绕过“30天内必须在线登录”，登录一次微软帐户，你会得到%LocalAppData%\Microsoft\VSCommon\OnlineLicensing文件夹，你可以复制到离线电脑。

不，社区版是免费的，所以只需登录并消除警告。欲了解更多详情，请查看以下链接。 https://visualstudio.microsoft.com/vs/support/community-edition-expired-buy-license/

重要声明:以下信息仅供学习之用!延长Visual Studio Community 2017的试用期可能是非法的!

当您删除HKEY_CLASSES_ROOT\Licenses\5C505A59-E312-4B89-9508-E162F8150517中的所有文件时，具有相同的效果。运行“Visual Studio安装程序”并选择“修复”选项。现在你有30天的试用期。但是你在你的VS中丢失了所有的配置。