错误信息：
Failed to load the dll from [C:Program Filesdotnethostfxr6.0.0-preview.6.21
352.12hostfxr.dll], HRESULT: 0x80070057
The library hostfxr.dll was found, but loading it from C:Program Filesdotneth
ostfxr6.0.0-preview.6.21352.12hostfxr.dll failed
- Installing .NET prerequisites might help resolve this problem.
https://go.microsoft.com/fwlink/?linkid=798306
.NET 6 支持度
Windows
| OS | Version | Architectures | Lifecycle |
|---|---|---|---|
| Windows Client | 7 SP1(*****), 8.1 | x64, x86 | Windows |
| Windows 10 Client | Version 1607+ | x64, x86, Arm64 | Windows |
| Windows Server | 2012+ | x64, x86 | Windows Server |
| Windows Server Core | 2012+ | x64, x86 | Windows Server |
| Nano Server | Version 1809+ | x64 | Windows Server |
* Windows 7 SP1 需要安装Extended Security Updates.
因此Win7需要安装更新。
UpdatePack7 R2(Win7补丁累积更新包)，UpdatePack7 R2是Win7系统上的一款累积更新安装包工具，由老毛子团队制作，将Win7系统上的一些更新包程序整合到一起，一个补丁即可完成Win7系统的全部更新操作。
官网：Набор обновлений UpdatePack7R2 для Windows 7 SP1 и Server 2008 R2 SP1 — simplix.info
https://blog.simplix.info/update7/
升级后正常了。
