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 @{...
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...
Dell iDRAC “The Webpage Cannot Be Found”
KB ID 0001427 Problem I needed to reboot one of my ESX hosts yesterday, so I jumped on the DRAC and got this? An internet search turned up, “The best way to fix this is, firmware update the iDRAC”, which I did. But sadly it didn’t fix the problem. Solution In IE11 they have done a good job of hiding compatibility settings > Options > Compatibility View Settings > Type in the IP/URL > Add > Close >...