π ~1 min read
Table of contents
Symptom & Impact
Security update sequence fails because required optional component payload is missing.
Environment & Reproduction
Appears on hardened servers without access to FoD/Source SxS repository.
Get-WindowsFeature | Where-Object {$_.InstallState -eq 'Removed'}
Root Cause Analysis
Feature binaries were removed to save space and cannot be restored during servicing.
Quick Triage
Identify removed features tied to update applicability errors.
dism /online /get-features /format:table | findstr /i disabled
Step-by-Step Diagnosis
Trace package logs for missing source payload references.
findstr /i /c:"source files could not be found" C:WindowsLogsCBSCBS.log

Solution β Primary Fix
Provide trusted SxS source and restore required feature payload, then rerun update.
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Install-WindowsFeature NET-Framework-Core -Source filesrvsxs
dism /online /cleanup-image /restorehealth /source:wim:D:sourcesinstall.wim:4 /limitaccess

Solution β Alternative Approaches
Stage FoD repository locally on each patch segment for isolated environments.
robocopy filesrvsxs C:SxS /MIR
Verification & Acceptance Criteria
Feature state is healthy and security update applies successfully.
Get-WindowsFeature NET-Framework-Core
Get-HotFix | Select -First 5
Rollback Plan
Remove newly installed feature only if application baseline requires minimal footprint.
Uninstall-WindowsFeature NET-Framework-Core
Prevention & Hardening
Maintain approved FoD source mirrors and tie them to patch runbooks.
Test-Path filesrvsxssourcessxs
Related Errors & Cross-Refs
Related: 0x800f081f source not found, 0x800f0954 WSUS feature install path issues.
Related tutorial: View the step-by-step tutorial for Windows Server 2016.
View all Windows Server 2016 tutorials on the Tutorials Hub β
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Windows Server features on demand and component source management guidance.
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