You'll need to set the preference xpinstall.signatures.required to false
via autoconfig or default prefs. Or check with McAfee to see if they have a
signed version of the addon.

Mike

On Dec 6, 2016 11:25 PM, "Schroth, Juergen" <[email protected]>
wrote:

> Hi,
>
>
>
> we are using actually on a Windows 10 client Firefox 38.8.0 ESR and we
>
> want to upgrade to version 45.5.1 ESR .
>
> After the first installation I recognized that now on the same client with
> the same configuration the add-on
>
> McAfee ScriptScan for Firefox 15.4.0 is deactivated because it couldn’t be
> verified.
>
> On this client we have
>
> McAfee VirusScan Enterprise 8.8.0 ( 8.8.0.1528 )
>
> On a Windows 7 client we don’t have this behavior. Does anyone know how to
> get rid
>
> of this failure ?
>
>
>
> Regards
>
> Juergen
>
>
>
>
>
> Mit freundlichen Grüßen / Kind regards
>
>
>
> *Jürgen Schroth*
>
> Senior Service Professional, RfS Projectmanagement,  IXOS Client Support
>
>
>
> Bechtle Onsite Services GmbH
>
> Bechtle Platz 1
>
> 74172 Neckarsulm
>
>
>
> Telefon: +49 721 3714466
>
> mobil:     +49 151 52617344
>
> E-Mail: [email protected]
>
>
>
> Sitz Neckarsulm, Amtsgericht Stuttgart HRB 571713, Ust-Id.Nr.DE203362620,
> Geschäftsführer Jörg Öynhausen, Alexander Köhler
>
>
>
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