官方已经声明不再支持，如有需要，请安装使用 Visual Studio 2019，或将项目版本升级至最低支持的版本：4.5.2。
运行VS2019安装程序，选择单个组件，安装.Net Framework4 目标包
VS目前支持的运行环境如下：
https://dotnet.microsoft.com/download/dotnet-framework
| Version | Release date | End of support |
|---|---|---|
| .NET Framework 4.8 (recommended) | April 18, 2019 | |
| .NET Framework 4.7.2 | April 30, 2018 | |
| .NET Framework 4.7.1 | October 17, 2017 | |
| .NET Framework 4.7 | April 05, 2017 | |
| .NET Framework 4.6.2 | August 02, 2016 | |
| .NET Framework 4.6.1 | November 30, 2015 | April 26, 2022 |
| .NET Framework 4.6 | July 20, 2015 | April 26, 2022 |
| .NET Framework 4.5.2 | May 05, 2014 | April 26, 2022 |
| .NET Framework 3.5 SP1 | November 18, 2008 | October 10, 2028 |
The following releases have reached end of life, meaning they're no longer supported. We recommend moving to a supported release.
| Version | Release date | End of support |
|---|---|---|
| .NET Framework 4.5.1 | October 17, 2013 | January 12, 2016 |
| .NET Framework 4.5 | August 15, 2012 | January 12, 2016 |
| .NET Framework 4.0 | April 12, 2010 | January 12, 2016 |