Fixed: VMMS.exe Process Crashes After Restart on Windows 8.1, 10, Windows Server R2

By: Radu Tyrsina
2 minute read

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Many of our readers have been complaining about the infamous vmms.exe process crash just after the restart on Windows 8.1. Luckily for those affected, Microsoft has issued an official update which should solve the problem.
VMMS.exe windows 8.1 crash
According to Microsoft, the problem occurs with those who have a Windows Server 2012 R2-based Hyper-V cluster managed by System Center Virtual Machine Manager (SCVMM). After having created a virtual machine (VM) in the Hyper-V cluster and enabling the dynamic memory (DM), the user restarts the virtual machine management service (VMMS.exe) and that’s when the problem arrives. What happens is that the memory demand is empty in the Hyper-V Manager UI, performance counters for the DM do not exist and the DM operations on the VM do not work. So, you just need to go ahead and make sure you install file KB 2955164.


For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

Read AlsoFixed: Video Glitch with Wi-Fi Adapter When Playing a Miracast Stream in Windows 8.1

Virtual machines crashes after restart on Windows 8.1, Server R2 – update released to fix it

Here’s the reason that is causing the issue, according to Microsoft:

This issue occurs because of a missing call in OnServerStartup() function during the restart of VMMS.

And here are the operating systems affected by the change:

  • Windows 8.1 Enterprise
  • Windows 8.1 Pro
  • Windows 8.1
  • Windows Server 2012 R2 Datacenter, Essentials, Foundation, Standard

Let us know by leaving your comment below if you too have had similar problems and if this has proved to be of any help in solving them.

Read AlsoHow to Transfer your Windows 8.1 License to a New Computer

For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

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