ViconNet will not initialize (Windows 10)

There is a Windows update which can cause this problem.  At this point the only solution is to uninstall the update.

This can be done by going into Control Panel, Programs, Programs and Features, and then clicking on View installed updates. Scroll down to the section labeled 'Microsoft Windows' and remove the update listed below:

Security Update for Microsoft Windows KB4338819 (released 07/10/2018)



Microsoft has further info on what effects this update may have on a system:


Update 9/13/18 JM : see ticket 256429

Customer had issues with another MS KB kb4343897 that was installed on the customer PC, and when removed ViconNet will run.

ref: MS link


August 14, 2018—KB4343897 (OS Build 16299.611)

Applies to: Windows 10, version 1709

Release Date:
August 14, 2018
OS Build 16299.611
Improvements and fixes

This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

  • Provides protections against a new speculative execution side-channel vulnerability known as L1 Terminal Fault (L1TF) that affects Intel® Core® processors and Intel® Xeon® processors (CVE-2018-3620 and CVE-2018-3646). Make sure previous OS protections against Spectre Variant 2 and Meltdown vulnerabilities are enabled using the registry settings outlined in the Windows Client and Windows Server guidance KB articles. (These registry settings are enabled by default for Windows Client OS editions, but disabled by default for Windows Server OS editions.)


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