Could not load file or assembly (nopcommerce 3.5) when changing to release


I have a new nopcommerce 3.5 website that i want to publish and on debug it all was well but as soon i changed to release im getting this error

Error   1   Could not load file or assembly 'file:///C:\Users\User\Desktop\nop\packages\Autofac.3.5.2\lib\net40\Autofac.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)   C:\Users\User\Desktop\nop\Libraries\Nop.Services\SGEN   Nop.Services

and i looked all over the web and did all i could and it is just not working

what i did.

  1. clean and rebuild
  2. restart vs
  3. i re-downloaded a fresh copy of the code and the same happened
  4. deleted all the references and rebuilt
asked on Stack Overflow May 20, 2015 by CMS

5 Answers


OK here is how i solved it.

The files were locked by windows and its only visible in debug

I had to go to each .dll file that showed up in the error, and in the properties there was a button UNBLOCK and ones i applied the changes the errors was gone

answered on Stack Overflow May 21, 2015 by CMS

Instead of unblock all files one by one, you can do it from root folder by using Windows PowerShell:

dir D:\Projects\Nop -recurse | Unblock-File

answered on Stack Overflow Aug 16, 2015 by Soon Khai

To unblock files use this command on Windows Powershell:

gci PASTE_FOLDER_PATH_HERE\*.dll -Recurse | Unblock-File

1) "gci" is used to load all files located under the specified path.
2) "-Recurse" is used to load files located in sub folders under the specified path.

answered on Stack Overflow Sep 25, 2015 by user3125999

Yes, It worked for me in a way right click on NopCommerce\packages\Autofac.3.5.2\lib\net40\AutoFac.dll then Unblock & finally click on OK, it will resolve this issue. I resolved this issue in this way.

answered on Stack Overflow May 4, 2016 by Anjan Kant

get-childitem *.*| Unblock-File 

For those limited in their PowerShell options:

FOR %a in (*.*) do (echo.>%a:Zone.Identifier)
answered on Stack Overflow Jul 22, 2016 by OzBob • edited May 23, 2017 by Community

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