How to Install Windows Updates on Server Core with SConfig
Applies to: Windows Server 2019, 2022 and 2025 Server Core
SConfig provides a supported interactive route for scanning, selecting and installing Microsoft updates on Server Core without adding a graphical shell.
This procedure is written for administrators working on a console or through an access path that will remain available during network and restart operations. If Netcloud24 manages the server, review the change with support when it affects licensing, connectivity or recovery. See networkmanager.info for managed Windows VPS and RDS CAL services in Canada.
Before you begin
- Verify a current backup and recovery path.
- Review the maintenance window and application restart requirements.
- Confirm the server can reach the organization’s WSUS service or approved Microsoft Update endpoints.
- For clustered or redundant services, follow the workload-specific drain procedure first.
Procedure
Step 1: Open SConfig
Launch SConfig from the console.
SConfigStep 2: Review update settings
Confirm whether the server is configured for manual or automatic update behaviour according to policy.
Step 3: Start an update scan
Choose the Download and Install Updates option and select all updates or recommended updates according to the approved maintenance plan.
Step 4: Allow installation to finish
Do not interrupt servicing. Record failed KB numbers for later troubleshooting.
Step 5: Restart when required
Reboot within the maintenance window, then allow services and monitoring to recover before closing the change.
Verify the result
Capture build information, last boot time and any setup or Windows Update errors.
Get-ComputerInfo | Select-Object WindowsProductName,OsBuildNumber,OsLastBootUpTime
Get-WinEvent -FilterHashtable @{LogName='System';Level=2;StartTime=(Get-Date).AddHours(-2)} -ErrorAction SilentlyContinue | Select-Object -First 20Rollback or recovery
Individual update removal must be evaluated against Microsoft guidance and the application impact. Use the documented uninstall method only when the affected update supports removal; otherwise restore the tested system backup or rebuild the affected node.
Version notes
SConfig is available on all target releases. Windows Server 2022 and 2025 Core normally open it automatically at sign-in.
Operational checklist
- Record the change, administrator and maintenance window.
- Confirm monitoring and backups after any restart.
- Test the service from a representative client, not only from the server console.
- Remove temporary firewall rules, accounts or installation media.
Need a managed Windows Server?
Netcloud24 provides managed Windows VPS plans with Windows Server Standard, RDS User CAL options, daily backups and Canadian support. Review current configurations at https://networkmanager.info/.
