category archive / 18 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 noteHere’s another very useful script which simply lists all of your users in Active Directory, sorted by when their passwords were last changed. Great for checking if your password policies are actually being enforced… Import-Module...
Read the noteHave a look at my latest guest post on Netwrix: http://blog.netwrix.com/2016/08/09/five-free-exchange-security-tools-you-probably-do-not-know-about/
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 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 noteSystem Restore – a very useful tool when it comes to recovering from a bad program install or botched update is disabled by default in Windows 10.
Read the noteSo I recently had to fix a problem for one of my family (hey Mum!), whereby Lightroom (4.6 at the time) was failing to import photos from any of her digital cameras through Lightroom. Problem Lightroom would open the import window...
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