SoftArtisans provides XFile in a digitally signed cab file. However, if you are accessing a web application which is distributing XFile in an unsigned cab file, this behavior may occur.

Internet Explorer Security Warning
---------------------------------------------------
The publisher could not be verified. Are you sure you want to install this software?
Name: saxfileee.cab
Publisher: Unknown Publisher

| Install | Don't Install |
--------------------------------------------------
This file does not have a valid digital signature that verifes its publisher. 
You should only install software from publishers you trust.

To prevent your users from encountering this dialog when using XFile in your web application, you must distribute a signed cab file. You can do this in one of two ways:

• Distribute the SoftArtisans signed cab file. Please note: This cab file warns of impending uploads and downloads and has other limitations to prevent XFile from being used maliciously while it is distributed with the SoftArtisans signature.

• Distribute your own cab file and provide your own digital signature. The added benefit to this approach is that you can use the non-warning dlls and avoid unnecessary pop-up messages during uploads and downloads.

To learn more about how to sign your own cab file and to better understand the differences between the warning and non-warning dlls, please see the section in the XFile documentation under "Installation" entitled Signing XFile.