tag archive / 12 entries
Two Windows 11 computers lost domain trust, and repadmin showed a worrying 40-minute delta. Live tests found replication working in seconds; reused computer names during rebuilding explained the failures.
Read the noteThe UniFi gateway could resolve my Protect console's DirectConnect hostname, but Windows DNS returned NXDOMAIN. An AD-integrated conditional forwarder fixed it for both consoles.
Read the notewin-acme couldn't renew an Exchange certificate, claiming there wasn't enough memory. There was RAM available — the useful clue turned out to be an October Windows Server update and an RPC workaround.
Read the noteDuo was configured, the user was registered, and Entra still wanted Microsoft Authenticator. A look at the policies applying to the sign-in uncovered an easily missed difference between requiring MFA and requiring an...
Read the noteExchange is a very powerful piece of software. Unfortunately, misconfigurations, shared mailbox access, rogue admins and more can allow sensitive data to be viewed or deleted. I experienced this a few weeks ago where a member of a...
Read the noteToday I had to try and find a virtual machine given its MAC address on a non-clustered Hyper-V environment. Here’s a quick PowerShell script to do just that! import-module hyper-v $Servers = @(“server1”,“server2”,“etc”) $results =...
Read the noteHyper-V is amazing – you can do pretty much anything with a VM when it’s online now – even move it to an entirely new host with no shared anything. Apart from change the amount of memory in the VM! (Yes, I know about dynamic...
Read the noteShadow Copies can be a lifesaver – when used correctly. They are not a replacement for backups, but can sometimes stop you reaching for that backup tape stored in the depths of the IT office (yes, in that cupboard!). I recently...
Read the noteI had an example over the weekend whereby I needed to run a PowerShell command at a certain time due to a maintenance window. Rather than using task scheduler, as this was a one-off, I decided to use PowerShell to achieve this....
Read the noteSometimes you just want to see how much free memory is on each of your cluster nodes. Here’s a quick powershell line to report that back:
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