To resolve this issue, do the following:
1) Run CMN "As an Administrator"
2) Make sure User Account Control is set to the lowest value possible. This might require editing the Registry if it is still acting as if it is enabled even after reducing the value in the Control Panel.
This Microsoft Technote discusses how to do that: https://gallery.technet.microsoft.com/Registry-Key-to-Disable-UAC-45d0df25
Quest accepts no responsibility for any loss of data caused by improper editing to the Registry. Please make sure it is backed up before carrying out any works.
Quest accepts no responsibility for any data loss caused by following information contained in External websites.