WinSxS Cleanup on Windows Server 2022 and 2025: Free Disk Space Safely
Measure the WinSxS component store with DISM AnalyzeComponentStore, clean it safely with StartComponentCleanup, and understand what /ResetBase takes away.
October 7, 2026
Event ID 4771: Kerberos Pre-Authentication Failed (Codes)
Event ID 4771 is a failed Kerberos pre-authentication on a domain controller. Decode failure codes 0x18, 0x12, 0x17, 0x25 and find the client IP behind lockouts.
October 7, 2026
Event ID 5805: Netlogon Session Setup Failed to Authenticate
Netlogon event ID 5805 means a computer failed to authenticate its secure channel to a DC. Find why its machine password is out of sync and repair it.
October 7, 2026
Event ID 1058: Group Policy Failed to Read gpt.ini (Fix)
Fix event ID 1058 (Group Policy failed to read gpt.ini): find the DC and path, test access, then check SYSVOL replication, DNS, the DFS client, permissions and Kerberos.
October 7, 2026
Event ID 1129: Group Policy Failed, No Connectivity to a DC
Event ID 1129 means Group Policy found no network path to a domain controller. Tell a startup timing race from a real outage and fix each one.
October 7, 2026
Event ID 4012 DFSR: Replicated Folder Offline Too Long (Fix)
DFSR event ID 4012 means a replicated folder was offline longer than MaxOfflineTimeInDays. Why not to raise the limit, and how to resync safely.
October 7, 2026
Event ID 4625: An Account Failed to Log On (Status Codes)
Event ID 4625 records a failed Windows logon. Decode Logon Type and Status/Sub Status codes, find the source IP and spot brute-force attacks with PowerShell.
October 7, 2026
Event ID 1030: Group Policy Processing Failed (Causes and Fix)
Event ID 1030 means Group Policy could not retrieve its GPO list from a domain controller. Read the error code, find the cause (DNS, ports, time, secure channel) and fix it.
October 7, 2026
cPanel vs Plesk (2026): Which Control Panel for Hosting?
cPanel vs Plesk in 2026: licence editions and prices, Windows/IIS support (Plesk only), WP Toolkit differences, a Linux feature table and how to migrate either way.
October 7, 2026
DFS Replication Backlog: Check It with PowerShell and Fix It
Check the DFS Replication backlog with Get-DfsrBacklog and Get-DfsrState, read the health report, and fix staging quota, sharing violations, event 2213 and 4012.
October 7, 2026
PowerShell Cheat Sheet for Windows Server Admins
PowerShell cheat sheet for Windows Server admins: services, Get-WinEvent filters, networking, firewall, disks, updates, local users, Active Directory, remoting and tasks.
October 6, 2026
AD Health Check Report: dcdiag and repadmin PowerShell Script
Free PowerShell script that runs dcdiag, repadmin /replsummary, w32tm and SYSVOL DFSR checks on every DC and saves a colour-coded HTML report.
October 6, 2026