启动任务管理器并结束与Visual Studio相关的任何进程。

在我的案例中，Visual Studio在没有询问任何确认或显示警告的情况下自动关闭。

不要停止这个过程。等待5到10分钟。Visual studio将自动启动。

很可能Visual Studio正在更新，就像错误消息暗示的那样，如果你等待几分钟更新完成，你应该能够再次运行Visual Studio而没有问题。

If the problem persists or if you're just curious, open up your task manager and see if there is anything related to (Microsoft) Visual Studio running but don't just kill the process. Check instead if the process is using any resources - if it has a high I/O count, then it's actually updating and you should let it do its thing. If CPU-usage and memory usage remain mostly constant and there is no disk activity for the process for several minutes, this could mean that the process is stuck. You might have to kill it, but proceed with caution. Hopefully if this is an update for Visual Studio, the process name should include a version number or some sort of indication of what kind of update is being applied that you can use to search for more information through a search engine or through Microsoft's online resources.

原因是一个待定的Windows更新。Windows更新后，Visual Studio启动没有任何问题。

我从Windows任务管理器中启动了Windows安装程序服务，然后打开了Visual Studio 2019 (这里建议的解决方案对我来说很有效)

我今天遇到了同样的问题(VS 2015更新3)。注意到服务“VSStandardCollectorService140”被停止了。(我昨天登录时出现蓝屏错误。可能与此有关)。重新启动这个服务，它正在工作