Summary

If installation files have been directly downloaded from the Internet and uncompressed then running the Config.ps1 or InstallCognos.ps1 script may fails to an error message like the following:

Could not load file or assemply 'file:///C:\FNMS\Support\DotNetZip.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)

Could not load file or assemply 'file:///C:\FNMS\Support\Ionic.Zip.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)

Cause

Windows can block access to DLL files that it tracks as having been downloaded from an untrusted location.

Resolution

Executing a PowerShell command like the following will use the Unblock-File cmdlet to unblock access to downloaded DLLs (replace the path "C:\FNMS" with the relevant directory path for your environment):

Get-ChildItem -Recurse "C:\FNMS\Support" | Unblock-File

Additional Information

Here are some additional resources that discuss unblocking files in Windows environments:

• Easily Unblock All Files in a Directory Using PowerShell (devblogs.microsoft.com)
• Clicking on "unblock" for a file's security properties has no effect - file remains blocked (answers.microsoft.com)