Windows Server
Windows Server diagnostic and administration: services, RDP, storage, VSS, Event ID, Power Shell, certificates and updates
Windows Server Center
Windows Server Center: Active Directory, DNS, DHCP, GPO, services, certificates, storage, events and Power Shell
ResourceEvent ID Windows
Look for current Windows Event IDs and see their meaning, source, causes, checks and Power Shell commands
ResourceWindows 11 / Workstation Center
Windows 11 diagnostics for startup, updates, performance, profiles, BitLocker, drivers, networking, event logs, DISM and SFC.
Command / scriptShow latest Windows patches installed
Lists the latest Windows patches with their KB ID and date of installation
Command / scriptGenerate a quick inventory of a Windows PC
Shows model, serial number, Windows, processor, memory and disks of the station
Command / scriptShow Windows last boot and uptime
Calculates how long Windows has been running without full restart
ResourceSSL Center / Certificates / PKI
SSL/TLS analysis and diagnosis: expiration, SAN, certification chain, PEM, CSR, AD CS and troubleshooting commands
ResourceWordPress Center
WordPress diagnostic: critical error, 500, database, permalinks, SMTP, cron, plugins, Scriptor,194, SSL and performance
Knowledge hubHome
Free tools, procedures, diagnostics, scripts, dictionary and practical resources for IT technicians, system administrators and SMEs
IT dictionaryWindows Update for Business
an IT concept in the Windows / Windows Server domain associated with Windows Update for Business
IT dictionaryWindows Server Core
a Windows Server installation option with minimal graphical interface, administered mainly remotely or from the command line
IT dictionaryWindows Service
A Windows program designed to work in the background, often without an open user session
IT dictionaryPowerShell Constrained Language Mode
an IT concept in the Windows / Windows Server domain associated with PowerShell Constrained Language Mode
IT dictionaryActive Directory Certificate Services (AD CS)
the Windows Server role that provides a public key infrastructure and certificate authority integrated with Active Directory
IT dictionaryWindows Admin Center
a Microsoft web console for remotely managing Windows servers, clusters, Hyper-V, and PCs without relying on an RDP session
ResourceHow to repair Windows Update error 0x80073712
This BOAI guide provides a structured method for repairing Windows update 0x80073712
ResourceHow to diagnose Windows Update error 0x800F0922
This BOAI guide provides a structured method for diagnosing Windows update 0x800f0922
ResourceHow to check VSS writers when a backup fails
Check VSS writer state and errors near a failed backup, identify the owning application and validate a targeted correction and restore test.
ResourceHow to diagnose Event ID 129 and 153
This guide provides a structured method for diagnostics ID 129 and 153
ResourceHow to check if Windows firewall is enabled
Control the Windows firewall status on Domain, Private and Public profiles
ResourceHow to check the disk space of a Windows server
Quickly display l,space used and available on volumes of a Windows server
ResourceEvent ID 19 — Windows Update installation success
Windows Update indicates that an update has been successfully installed
ResourceEvent ID 20 — Windows Update installation failed
Windows Update did not manage to install an update
TroubleshootingWindows Service does not start
A Windows service will remain shut down or return an error immediately after the attempt to boot
ResourceEvent ID 13 — Failure of automatic certificate entry
Windows could not automatically enter a certificate requested
Resource0x8024402C — Windows Update proxy/DNS error
Windows Update is not able to properly resolve or join its update service
Resource0x8024401C — Windows Update timeout
Windows Update client exceeds a delay when communicating with the service
ProcedureCreate a gMSA for a Windows service
Controlled procedure to create a gmsa for a Windows service
ProcedureChange the password of a Windows service account
Controlled rotation procedure of an account used by several services or tasks
ProcedureWindows Server: handle a saturated system disk
Risk reduction procedure when a Windows Server system volume lacks d,space
ProcedureRepair Windows system files with DISM and SFC
Use Microsoft tools in the correct order to check and then repair the image and system files
ProcedureDeploy Windows LAPS
Deploy Windows LAPS to an AD DS pilot OU with scoped permissions, encryption settings, password backup, recovery and rotation checks.
ProcedureIIS: renew and replace an HTTPS certificate
Procedure for replacing an HTTPS certificate on IIS with validation of the AB and chain
ResourceBackup & VSS — Cheat sheet
Backup verification, VSS writers and providers, recovery objectives, backup chains and restore testing.
ResourcePowerShell — Essential commands
PowerShell commands for Windows administration, services, events, networking, files and remote sessions.
ResourceWindows network — diagnostic memo
Windows commands for IP configuration, DHCP, DNS, routes, TCP ports and network troubleshooting.
ResourceWordPress — Express troubleshooting
WordPress diagnostics for PHP logs, plugins, themes, database access, email delivery and recovery mode.
ResourceMicrosoft 365 — memo administration
Microsoft 365 reference for Entra sign-ins, Graph, Exchange Online, message tracing, Teams, Intune and device checks.
ResourceNetwork ports — memo form
Common TCP and UDP ports, their services and practical checks for network administration.
Knowledge hubActive Directory
Resources for Active Directory: Domain Controllers, DNS AD, GPO, Kerberos, replication, accounts and certificates
Knowledge hubMicrosoft 365
Microsoft 365 administration and troubleshooting: Entra ID, Exchange Online, Intune, One (2005), SharePoint, MFA and courier
Knowledge hubVMware
VMware resources for ESXi, vCenter, v sphere, VMDK, philanthropy, data store, shared storage, HA and vMotion
Knowledge hubHyper-V
Hyper-V administration and troubleshooting: virtual machines, VHDX, Stewarts, vSwitch, Live Migration, replication, Failover Cluster and CSV storage
Knowledge hubSQL / Databases
SQL Server, MySQL, MariaDB and PostgreSQL administration and troubleshooting: connections, performance, blocking, backups, logs and storage
Knowledge hubWindows 11 / Endpoint
Windows 11 troubleshooting: slow, Windows Update, BSOD, boot, profiles, BitLocker, drivers, network, One-In-Nation, and system repair