Multiple File Upload Error

The reason for this issue is 'Microsoft.mshtml.dll' has not been deployed in GAC (Global Assembly Cauche "C:\WINNT\assembly"). This dll file available in the "C:\Program Files\Microsoft.NET\Primary Interop Assemblies".

 

Follow one of the following deployment procedure.

 

1) Use GacUtil command tool

    gacutil /i "C:\Program Files\Microsoft.NET\Primary Interop Assemblies\Microsoft.mshtml.dll"

 

2) Open two explorer windows. One for "C:\WINNT\assembly" and another for " C:\Program Files\Microsoft.NET\Primary Interop Assemblies" and then drag and drop the 'Microsoft.mshtml.dll' to the first window.