Showing posts from August, 2016

DFS Slowdown on Windows Server 2012 R2

The other day, the file server started showing up by not serving any shares. Initially it happened once in a week which was solved by a reboot and then it started started to occur almost every hour.
The DFS replication service was showing 99% CPU usage during all of this.

After a bit of research, a hotfix for DFS (KB 3172614) released July 2016 was available.

After the installation of hotfix, the DFS replication service CPU usage came down to tolerable levels.

Windows 7/2008 VM not booting up on Hyper-V host after windows update using CAU

After updating three hosts out of five in a windows hyper-v cluster based on Nutanix using CAU tool, I noticed the Windows 7/2008 VMs stopped running on the updated hosts. Using the failover cluster manager, I managed to failover the VM to the non-updated host and it started working.

During troubleshooting, I came across the below two blogs which set me thinking: