WebX Mimics not Showing in Internet Explorer

[Anonymous user]

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In some cases for older versions of ClearSCADA, when using Internet Explorer 7 to view WebX the Mimics are not shown and the following error message is displayed:

The security certificate for the ActiveX control that is used by WebX has expired since the release of ClearSCADA 2005. The default security settings in Microsoft Internet Explorer 7 do not allow you to run an ActiveX component that has an expired security certificate.

The reason for this problem is that in ClearSCADA 2005 R0 and earlier, the web client control 'ViewXCtrl.cab' has a digital signature that is not time-stamped. This means that the validity of the 'ViewXCtrl.cab' control expires when the digital signature expires.

If you are using ClearSCADA 2005 R0 or earlier and cannot upgrade to a later version, there is an easy solution to your Mimic display problem. By replacing the 'ViewXCtrl.cab' control in your system package with a 'ViewXCtrl.cab' control from a later system package, you will resolve the Mimic display issue.
Warning: Only replace the 'ViewXCtrl.cab' control on systems running ClearSCADA 2005 R0 or earlier. If you replace the 'ViewXCtrl'cab' control on later systems, you may prevent your system from being able to display Mimics in WebX.

To replace the 'ViewXCtrl.cab' control:

• Contact our customer services team and request an updated version of the 'ViewXCtrl.cab' control. We will send you the file.

• Replace the existing 'ViewXCtrl.cab' control file with the new 'ViewXCtrl.cab' control that we have supplied. Typically, the 'ViewXCtrl.cab' control file is at the following location:

"C:\Program Files\Control Microsystems\ClearSCADA\WWW_CMI"

• When you have replaced the old 'ViewXCtrl.cab' control file with the new 'ViewXCtrl.cab' control file, restart your ClearSCADA server to apply the changes.

Your Mimics should now display correctly in WebX clients using Internet Explorer 7.

Fixed Version: This issue has been fixed in ClearSCADA 2005 R1 and later.
The 'ViewXCtrl.cab' control now has a time-stamped digital signature and so there are no Mimic display issues as its validity can extend beyond the digital signature's expiry time.

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