我下载了 cntk 2.0 beta 7。在执行 .\install.ps1 时，出现 install.ps1 未进行数字签名的错误：
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PS C:> cd .\local\cntk\Scripts\install\windows\ PS C:\local\cntk\Scripts\install\windows> .\install.ps1 .\install.ps1 : 文件 C:\local\cntk\ Scripts\install\windows\install.ps1 无法加载。文件 C:\local\cntk\Scripts\install\windows\install.ps1 未进行数字签名。您不能在当前系统上运行此脚本。有关运行脚本和设置执行策略的详细信息，请参阅 http://go.microsoft.com/fwlink/?LinkID=135170上的 about_Execution_Policies 。在 line:1 char:1 + .\install.ps1 + ~~~~~~~~~~~~~ + CategoryInfo : SecurityError: (:) [], PSSecurityException + FullyQualifiedErrorId : UnauthorizedAccess
如果我启动 powershell -executionpolicy unrestricted install.ps1 能够运行但没有安装任何东西，这里是输出：
This script will setup the CNTK prequisites and the CNTK Python environment onto the machine.
More help is given by calling 'get-help .\install.ps1' in your powershell environment.
The script will analyse your machine and will determine which components are required.
The required components will be downloaded in [C:\local\cntk\Scripts\install\windows\InstallCache]
Repeated operation of this script will reuse already downloaded components.
- If required VS2012 Runtime and VS2013 Runtime will be installed
- If required MSMPI will be installed
- Anaconda3 will be installed into [C:\local\Anaconda3-4.1.1-Windows-x86_64]
- A CNTK-PY34 environment will be created or updated in [C:\local\Anaconda3-4.1.1-Windows-x86_64\envs]
- CNTK will be installed or updated in the CNTK-PY34 environment
The parameter '-Execute' hasn't be supplied to the script.
The script will execute withouth making any actual changes to the machine.
1 - I agree and want to continue
Q - Quit the installation process
1
Determining Operations to perform. This will take a moment...
The following operations will be performed:
* Install Anaconda3-4.1.10
* Setup CNTK PythonEnvironment 3.4
* Setup/Update CNTK Wheel
* Create CNTKPY34 batch file
Do you want to continue? (y/n)
y
Performing download operations
Downloading [https://repo.continuum.io/archive/Anaconda3-4.1.1-Windows-x86_64.exe], please be patient....
** Running in DEMOMODE - no download performed
Download operations finished
Performing install operations
Installing Anaconda3-4.1.1. This will take several minutes. Please be patient ....
** Running in DEMOMODE - setting Exit Code **: 0
** Running in DEMOMODE - setting Exit Code **: 0
Setup/Update of CNTK Wheel environment. Please be patient....
** Running in DEMOMODE - setting Exit Code **: 0
Create-Batch [C:\local\cntk\scripts\cntkpy34.bat]:No-Execute flag. No file created
Install operations finished