This article was previously published under Q261941
This article has been archived. It is offered "as is" and will no longer be updated.
When your component attempts to download a signed .cab file, you may receive the following warning message:
Do you want to install and run "CAB File"?
The publisher cannot be determined due to the problems below:
The Trust Provider is unknown or not configured properly.
If you click No, the download operation quits. If you click Yes, the installation proceeds normally.
This behavior occurs because the Imagehlp.dll file is damaged or missing.
To resolve this problem, replace the Imagehlp.dll file that is extracted from Internet Explorer .cab files in your system folder.
For additional information about extracting original files, click the article number below to view the article in the Microsoft Knowledge Base:
129605 How to Extract Original Compressed Windows Files
NOTE: You must put the Imagehlp.dll file in the C:\Windows\System folder for Windows 95 or Windows 98, or in the C:\Winnt\System32 folder for Windows NT.
Alternatively, if you are using Microsoft Internet Explorer 5 or later, you can use the Repair Tool to obtain the right version of Imagehelp.dll. To repair, go to Control Panel, run Add/Remove Programs, click Uninstall for Internet Explorer, and select the Repair option.
This problem is not expected to happen on computers running Windows 2000 because of the File System Protection feature.
For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
264570 INFO: WebCast Available: How Does Internet Component Download Work?
"Trust Provider" "Certificates" "The Trust Provider is unknown or not configured properly"