PowerShell: Finding Stale User and Computer Accounts
KB ID 0001438 Problem I do this a lot, (usually prior to big migrations), most organisations have no mechanism for removing old users and computers from Active Directory, some don’t even disable the accounts. Find Users Who Have Never Logged On Use the following PowerShell Command; Get-ADUser -Filter { LastLogonDate -notlike “*” -and Enabled -eq $true } -Properties LastLogonDate | Select-Object @{...
vSphere: Open Console Only Opens the Web Console?
KB ID 0001437 Problem At first I simply though this was an IE problem, but I tried with Firefox and Chrome and it was the same. ‘Open Console’ simply opens the web console, and does not offer you a choice any more? Solution They’ve done a great job of hiding it! On the VM’s summary tab, click the options ‘cog’. And theres the options again. If you want to use the VMRC, you will need to download it...
Exchange: “BuildToBuildUpgrade” Error
KB ID 0001436 Problem In the middle of an Exchange upgrade I got a bit stuck with the following error; “Setup previously failed while performing the action “”BuildToBuildUpgrade” You can’t resume setup by performing the action “Install”. There are a couple of variations on this error as well, you can also see either of the following; “Setup previously failed while performing the action “Install” You can’t resume...
Exchange Update Fails: ‘Cannot find Arbitration Mailbox’
KB ID 0001435 Problem Last night was a late one, Exchange 2016 update (CU9) failed to install and left the server in an unusable state. Relevant Part(s) of the Error —–Output Removed For the Sake of Brevity—– $name = “SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c}”; —–Output Removed For the Sake of Brevity—– Write-ExchangeSetupLog -Info (“Cannot...
Exchange: No Arbitration Mailboxes?
KB ID 0001434 Problem I was doing a ‘mop up’, after an Exchange install problem, (post to follow.) And went to look at the ‘Arbitration’ mailboxes in the clients Exchange Organisation. And they could not be seen? Get-Mailbox | -Arbitration Get-MailboxDatabase | Get-Mailbox -Arbitration Solution In my case, it was because the Exchange server was in a ‘Child Domain’ and the...
Windows RDP: ‘An authentication error has occurred’
KB ID 0001433 Problem When attempting to RDP to a remote machine; An authentication error has occurred. The function requested is not supported Remote computer: {name} This could be due to CredSSP encryption oracle remediation. Or you may just see; An authentication error has occurred. The function requested is not supported Remote computer: {name} Solution This is happening after you have a applied a windows security update it...
EVE-NG (VMware) Connecting to the Internet
KB ID 0001432 Problem I did an article a while back on doing this with UNL, so I thought I’d revisit it today for EVE-NG. I really like EVE-NG, for proof of concept work, testing, and just learning new products I cant think of any product better. But what if you want to connect your labs to the outside world? Solution In all honesty a lot of this article you can skip, I’m just showing you what’s going on down at the...
Safari Keeps Re-opening Compromised/Spammy Web Pages
KB ID 0001431 Problem To be honest it was my own fault, I was trying to get some software and was on a ‘dubious’ file sharing site, when ‘Boom’ loads of popup windows and scripts executing! Normally I’d just’ force quit’ Safari, and open it again then get on with my life, but Safari ‘Helpfully’ remembered which URL I was on, and reopened it as soon as it launched, and the whole...
VMWare: Virtual Machine Disks Consolidation Needed
KB ID 0001430 Problem You may see a ‘warning triangle’ over one of your VM’s, and on its summary page you see the following; Virtual machine disks consolidation is needed. Virtual machine Consolidation Needed status. Solution Basically theres a problem with the machine snapshots, If you right click the VM > Snapshots > Consolidate. Yes – Job done, that was easy. Related Articles, References,...
Cisco ASA: Allow VPN Traffic “Through” A Cisco Firewall
KB ID 0001428 Problem I got asked to put in a VPN for a client, this week, it went from a simple site to site, to a site to site with a Fortigate firewall at one end, to a VPN from and ASA to a Fortigate ‘through’ another ASA. It’s been a few years since I had to tunnel ‘through’ a firewall, and experience tells me, if you don’t have control of BOTH ends of a new VPN tunnel, anything that stops...