Skip to main content
InSource Solutions

TN WW160 Could not Load File or Assembly Error 0x80131515




This article from InSource shows how to resolve an installation issue for Wonderware Intelligence, Information Server, and other applications.  The installation fails to complete with a "Could not load file or assembly" error with "Exception from HRESULT: 0x80131515".

  • Author: Rich Brooks
  • Published: 6/6/2016
  • Applies to: Wonderware Software Release 2014 and higher


The following error message is sometimes seen when attempting to install Wonderware applications from downloaded zip file format media.  It is necessary to extract the contents of the compressed file before the installation.


This issue is resolved by unblocking the content before starting the extract from the compressed file.  Right click on the zip file to select and open the properties dialog. 


Click on the Unblock button to disable the security feature that is blocking the file since it came from another computer.  This is intended to help protect the computer, but some of the required contents are not extracted from the file until the Unblock is selected.