Active Directory Replication: The active Directory property cannot be found in the cache

Last night I came across a problem with AD that I have never seen before. Normally, Active Directory Domain Services is an extremely robust application that will continue to work, regardless of not implementing best practices, or misconfiguration. However, I promoted a new domain controller and was surprised to see that it was not able…

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Remove Stubborn PSC or vCenter Appliance from an SSO Domain

While attempting to decommission one of our vCenter sites, I ran into an issue removing one of the PSCs. This site consisted of two PSCs and one vCenter appliance. I removed the first PSC from the SSO domain successfully, and then removed the vCenter appliance. Things became a little tricky during the removal of the…

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Enable SNMP in ESXi 6.5 via SSH

I was trying to enable SNMP on a few stand-alone ESXi 6.5 hosts the other day. Unfortunately, when attempting to enable this service using the vSphere Host Client, I received a very unhelpful error:   I wasn’t able to find any helpful information in the logs that could help identify the cause. Interestingly enough, enabling…

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Auditing Exchange Online Transport Rule Use

I recently came across a transport rule being unnecessarily used in Exchange Online. The transport rule in question was used for DLP, and encrypted messages based on the content. It searched message bodies for strings of characters matching credit card numbers, SSN’s, etc.  I was surprised to see that there was no way to easily…

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vSphere – Unable to Apply DRS Resource Setting on Host

I noticed this error on one of my hosts today. After reading the full error message on the Events tab, and paying particular attention to the “Error Stack” section, it was obvious what the problem was. “The configuration file of the virtual machine is corrupted”. Well, that helps narrow things down, but what virtual machine…

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Migrate Windows Deployment Services to New Server

We have been making a great effort to move all of our internal services to Windows Server 2016. This past week, it was WDS’ turn to get migrated. Migrating this role is extremely simple. Here are the steps that I took: Create new server and install WDS role. Stop WDS Service on old server Stop…

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