Cluster Networks in Windows Failover Clustering

Welcome to the Ask the Core Team blog. My name is Eriq Stern and today we are going to discuss Failover Cluster networks.  This information applies to Windows 2008 thru Windows 2012 R2 Failover Clusters. What does a Windows Failover Cluster consider a “Cluster Network”? In a Windows Failover Cluster, Cluster Networks are created automatically… Read more

Establishing Network Connectivity to a Share in the Windows Recovery Environment

Hi there! My name is Neil Dsouza and I’m a Support Escalation Engineer with the Windows Core team. Today I’m going to cover a scenario where you have a server that fails to boot and all you want to do is copy the data off the machine to a network share.  In most cases connecting… Read more

Behavior of Dynamic Witness on Windows Server 2012 R2 Failover Clustering

With Failover Clustering on Windows Server 2012 R2, we introduced the concept of Dynamic Witness and enhanced how we handle a tie breaker when the nodes are in a 50% split: See: Dynamic witness Tie breaker for 50% node split Today, I would like to explain how we handle the scenario where you are left… Read more

New Guided Walkthrough for troubleshooting problems relating to Event ID 1135 in a Failover Clustering environment

I wanted to post about a new walkthrough that we have to help in troubleshooting an Event 1135 on a Failover Cluster.  As a bit of a background, Failover Clustering sends a heartbeat from and to each node of a Cluster to determine its health and if it responding.  If it does not respond in… Read more

Failover Cluster Node Startup Order in Windows Server 2012 R2

In this blog, my Colleague, JP, and I would like to talk about how to start a Cluster without the need of the ForceQuorum (FQ) switch.  We have identified 3 different scenarios and how the Cluster behaves when you turn on the nodes in a certain order for Windows Server 2012 R2.  I first want… Read more

Troubleshooting Activation Issues

Today, Henry Chen and I are going to talk about troubleshooting some activation issues that we often run into. To begin, here is an article which talks about what Microsoft Product Activation is and why it is important. Also, thisarticle explains KMS Activation. Now, let’s jump into some common activation scenarios. Scenario 1 – Security… Read more

Errors Retrieving File Shares on Windows Failover Cluster

Hi AskCore, Chinmoy here again. In today’s blog, I would like to share one more scenario in continuation to my previous blog on Unable to add file shares in Windows 2012 R2 Failover Cluster. This is about WinRm a setting that could lead to failure on adding file shares using Windows 2012/2012R2 Failover Cluster Manager…. Read more

How big should my OS drive be?

My name is Michael Champion and I’ve been working in support for more than 12 years here at Microsoft.  I have been asked by many customers “What is the recommended size for the OS partition for Windows Server?”.  There are minimum recommendations in the technical documentation (and release notes), but those recommendations are more on… Read more

So what exactly is the CLIUSR account?

From time to time, people stumble across the local user account called CLIUSR and wonder what it is, while you really don’t need to worry about it; we will cover it for the curious in this blog. The CLIUSR account is a local user account created by the Failover Clustering feature when it is installed… Read more

CROSS POST: How Shared VHDX Works on Server 2012 R2

In the not far back point in time, there was a blog done by Matthew Walker that we felt needed to also be on the AskCore site as well due to the nature and the popularity of the article.  So we are going to cross post it here.  Please keep in mind that the latest… Read more