[SOLVED] Window Update Error 80072F8F.

For a few years, I’ve been haunted by the dreaded Windows Update issue 80072F8F. I experienced this error whenever one of my Windows 8.1 Pro and Windows Server 2012 R2 computers searched for updates on Windows Update (my computers were originally joined to a Windows 2012 Domain then raised to 2012 R2). And no, raising… Read More

Adding second Domain Controller tip.

While adding a new Domain Controller (DC) to your pre-existing forest, a nice tip to remember is to: (At the beginning) Always configure your wanna-be (New) DC's TCP/IP v4 PRIMARY DNS IP Address to point it to the FSMO DC. Then, once the New server becomes a new DC ("gets promoted"): Make sure that replication is successful… Read More

2 ways to customise Event Viewer "Log Size" through Group Policy.

If you ever wondered how to setup a custom event viewer log size through Group Policy, and all Google or Bing told you was this: located at: “Computer Configuration”. “Policies”. “Windows Settings”. “Security Settings”. “Event Log”. OR this: Located at: “Computer Configuration”. “Policies”. “Administrative Templates”. “Windows Components”. “Event Log Service”. Welcome to the bandwagon 🙂… Read More

my fav iptables settings.

Today I'm going to write about the (in)famous iptables, the be-all do-all of GNU/linux packet filtering de-facto standard. Iptables is recognized to stand as one of the most used and most powerful firewall solutions around the web. Here I'll just share some really basic rules applied to one of my little boxes: #!/bin/bash IPTABLES=/sbin/iptables modprobe… Read More

Set[UID][GID], Sticky Bits & checksecurity tools.

    Who, where, what. Linux file permissions is all about numbers: read permissions correspond to a "4", write permissions correspond to a "2" and execute permissions correspond to a "1". When you sum the previous values, you'll get the corresponding "rwx"-scheme (incidentally this also happens to correspond to 3 bits - From 000 To… Read More

3 easy steps to reduce hdd partition size with diskpart

  In a galaxy (Windows) "Millenium" away, for hard disk drive (hdd) partitioning maintenance tasks, I used to rely on third party (alright - "stolen") applications installed on Windows. Cloning tasks where relegated to Gparted, booted off an "old" CD. Since XP-Vista, I got into "diskpart", Microsoft's "barebones" partition editor. diskpart is good for basic NTFS (doh!… Read More

How to make a daily backup copy of a SMB-shared file.

Back in the day (when Shadow Copies, GitHub, SharePoint and Google Docs were unbeknown to me!), I relied on Linux file servers with Samba for basic Windows LAN company data shares. Some Company files were more important than others, so having some working copies of those files it was of utter importance (you already know… Read More

[SOLVED]'Stopping-Critical' stuck Hyper-V VM

  tl;dr: Open PowerShell As Admin. Find VM's GUID. Get-WmiObject -Namespace root\virtualization\v2 -class msvm_computersystem | select elementname, processid, name| ft -auto Kill related vmwp.exe <GUID>. taskkill /PID 1234 /F (Only during specific scenarios/if above won't work): net stop vmms & Restart Hyper-V Server.   What happened?! Someday I was in the process of shutting down an Hyper-V Virtual… Read More