本文转自：http://www.nopcommerce.com/boards/t/33637/4-errors.aspx
问题：
The 3.5 solution compiles fine, and Nop.Web also compile fine, however when I try to publish to a local folder I get these four errors
Error 1 Could not load file or assembly 'file:///F:
opCommerce_3.50_SourceFreshpackagesAutofac.3.5.2lib
et40Autofac.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515) F:
opCommerce_3.50_SourceFreshLibrariesNop.Services SGEN Nop.Services
Error 2 Metadata file 'F:
opCommerce_3.50_SourceFreshLibrariesNop.ServicesinReleaseNop.Services.dll' could not be found F:
opCommerce_3.50_SourceFreshPresentationNop.Web.Framework CSC Nop.Web.Framework
Error 3 Metadata file 'F:
opCommerce_3.50_SourceFreshLibrariesNop.ServicesinReleaseNop.Services.dll' could not be found F:
opCommerce_3.50_SourceFreshPresentationNop.Web CSC Nop.Web
Error 4 Metadata file 'F:
opCommerce_3.50_SourceFreshPresentationNop.Web.FrameworkinReleaseNop.Web.Framework.dll' could not be found F:
opCommerce_3.50_SourceFreshPresentationNop.Web CSC Nop.Web
I am using VS 2013 Ultimate on x64 Win 8.1.
These errors are from the fresh release (Dec 10) Source code I downloaded from both codeplex and nop sites. Folders using nop source code and publish folders have write permissions.
Thanks for any pointers.
Amen.
解答：
Windows 7 or Windows 8 has a security feature, sometime it block dlls inside the .zip file that is downloaded from internet.
Try following steps to get ride of it
1. Download the source code again or find the .zip file that you already downloaded
2. Right click then go Properties
3. In General tab click 'Unblocked'
Now unzip and try rebuild and publish, everything should be fine.
Best of luck.