This issue occurs because by default, systems are configured to search for device drivers on Windows Update. The drivers for the Matrox hardware can't be found on Windows Update, and it takes a long time to search for a driver for each device.
To work-around this problem, you should temporarily disable Windows Update Driver Searching by performing the following steps:
Case 9549 will prevent this issue from occurring on Cablecast systems, it is scheduled for release in Cablecast 6.0.3.
Article ID: 206
Created On: Wed, Dec 30, 2015 at 10:23 PM
Last Updated On: Wed, Dec 30, 2015 at 10:23 PM
Authored by: Ian Cobb [firstname.lastname@example.org]
Online URL: http://kb.trms.com/article/windows-update-driver-searching-interferes-with-matrox-driver-upgrade-206.html