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User Account Control must virtualize file and registry write failures to per-user locations.


Finding ID Version Rule ID IA Controls Severity
V-225068 WN16-SO-000530 SV-225068r569186_rule Medium
User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures non-UAC-compliant applications to run in virtualized file and registry entries in per-user locations, allowing them to run.
Microsoft Windows Server 2016 Security Technical Implementation Guide 2021-09-29


Check Text ( C-26759r466106_chk )
UAC requirements are NA for Server Core installations (this is the default installation option for Windows Server 2016 versus Server with Desktop Experience) as well as Nano Server.

If the following registry value does not exist or is not configured as specified, this is a finding.

Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\

Value Name: EnableVirtualization

Value Type: REG_DWORD
Value: 0x00000001 (1)
Fix Text (F-26747r466107_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Virtualize file and registry write failures to per-user locations" to "Enabled".