CA Spectrum install fails on Windows 2012

Document ID : KB000028446
Last Modified Date : 12/12/2018
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CA Spectrum install fails on Windows 2012 with the following error even though UAC is disabled:

SPEC-INT-20049 - insufficient privileges on <host> to create registry entries.

You can either turn off User Access Control (UAC) on or use the <host> user for Administrator authentication.
Spectrum installed on Windows 2012
Even though UAC is disabled in Control Panel -> User Accounts -> Change User Account Control settings, it is still active after you selected "Never notify".

User-added image
There are two ways to resolve this issue:

Option 1:

You have to turn off UAC via registry by changing the DWORD "EnableLUA" from 1 to 0 in "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system".
You will get a notification that a reboot is required.
After the reboot, UAC is disabled.

User-added image

Option 2:

Expand Security Settings

Expand Local Policies

Expand Security Options

Disable the following:

User Account Control: Admin Approval Mode for the Built-in Disabled

User Account Control: Allow UIAccess applications to prompt Disabled

User Account Control: Behavior of the elevation prompt for Elevate with

User Account Control: Behavior or the elevation prompt for Prompt for c

User Account Control: Detect application installations and Disabled

User Account Control: Only elevate executables that are sign Disabled

User Account Control: Only elevate UIAccess applications th Disabled

User Account Control: Run all administrators in Admin Appr Disabled

User Account Control: Switch to the secure desktop when pr Disabled

User Account Control: Virtualize file and registry write fai Disabled