Windows Server 2019 Telemetry must be configured to Security or Basic.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-205869	SRG-OS-000480-GPOS-00227	WN19-CC-000250	SV-205869r991589_rule	2025-02-25	3

Description
Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Limiting this capability will prevent potentially sensitive information from being sent outside the enterprise. The "Security" option for Telemetry configures the lowest amount of data, effectively none outside of the Malicious Software Removal Tool (MSRT), Defender, and telemetry client settings. "Basic" sends basic diagnostic and usage data and may be required to support some Microsoft services.

Description

Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Limiting this capability will prevent potentially sensitive information from being sent outside the enterprise. The "Security" option for Telemetry configures the lowest amount of data, effectively none outside of the Malicious Software Removal Tool (MSRT), Defender, and telemetry client settings. "Basic" sends basic diagnostic and usage data and may be required to support some Microsoft services.

ℹ️ Check
If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\DataCollection\ Value Name: AllowTelemetry Type: REG_DWORD Value: 0x00000000 (0) (Security), 0x00000001 (1) (Basic)

✔️ Fix
Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Data Collection >> "Allow Telemetry" to "Enabled" with "0 - Security [Enterprise Only]" or "1 - Basic" selected in "Options".