Solved

Hyper-V Virtual Switch Manager

Posted on 2015-01-15
7
1,663 Views
Last Modified: 2015-01-30
I have a laptop that runs Hyper-V on it for development of applications.  Yesterday all of the sudden I lost network connection inside one of my virtuals.  

I went to the Hyper-V manager and clicked on the Virtual Switch Manager.  It comes up displaying an alert box that says 'An error occurred while trying to retrieve a list of virtual switches.  The operation on computer 'localhost' failed.

After some fiddling I noticed that in the device manager there are 5 anomalies.  
-Under Network adapters, the 'Microsoft Hyper-V Network Switch Default Miniport' has an alert by it because it's driver is giving a code 39
-There is now an unknown device listed.  It traces to ROOT\VMBUS. This device is not there in between installing Hyper-V so it is related to it somehow.
-3 devices under 'system devices' have the yellow alert and give a code 39.  Hyper-V PCI Server, Hyper-V Virtual Disk Server, Hyper-V Virtualization Infrastructure Driver.

Trying to update the drivers does not work.  Windows reports back that the drivers are current and up to date.  I cannot uninstall the Network Switch Default Miniport.  I try to click it, it asks if I want to uninstall, but does nothing.  Tried again making sure that Hyper-V service was not running to no avail.

Tried uninstalling and re-installing Hyper-V but it always comes back the same.

Any other ideas?
0
Comment
Question by:joebu23
  • 4
  • 3
7 Comments
 
LVL 38

Expert Comment

by:Philip Elder
Comment Utility
I take it the 39 errors are inside the VM? Re-install Integration Services and reboot the VM.
0
 

Author Comment

by:joebu23
Comment Utility
The errors are on the host system in the device manager.  I cannot boot up any cm at the moment.   It hangs when trying to start one.
0
 
LVL 38

Expert Comment

by:Philip Elder
Comment Utility
I'm looking at my device manager right now for a Windows 8.1 desktop that has Hyper-v installed and there are no Hyper-V related components listed.

VMBus and the like are a part of Integration Services that get installed into a VM to allow it to interact correctly with the hypervisor and thus the host's hardware.
0
Find Ransomware Secrets With All-Source Analysis

Ransomware has become a major concern for organizations; its prevalence has grown due to past successes achieved by threat actors. While each ransomware variant is different, we’ve seen some common tactics and trends used among the authors of the malware.

 

Author Comment

by:joebu23
Comment Utility
If I uninstall hyper v from the host those devices go away but as soon as I re-enable hyper v they show up again.  Sadly I cannot remember if they have always been there.
0
 
LVL 38

Expert Comment

by:Philip Elder
Comment Utility
There is an ISO called VMGuest.ISO or something along those lines. Did Integration Services somehow get installed on the host?

The only Hyper-V reference in my own Device Manager now that I've delved deeper into it is for the vSwitch driver under Network Adapters.

In the VM itself I see a bunch of Hyper-V drivers under System Devices which is where these belong.
0
 

Author Comment

by:joebu23
Comment Utility
I don't know if integration services did get installed to the host.  They must have at one point. I ended up wiping the drive and starting fresh as that particular machine had several other issues.  (Also couldn't waste anymore time on it as is.  Two days fixing an issue is a little much)  The main issue is the vSwitch driver, which stopped responding and refused to be uninstalled.  Would an install of integration services on the host cause that driver to break?
0
 
LVL 38

Accepted Solution

by:
Philip Elder earned 500 total points
Comment Utility
It could certainly muck things up. They do not belong on the host at all.
0

Featured Post

How to improve team productivity

Quip adds documents, spreadsheets, and tasklists to your Slack experience
- Elevate ideas to Quip docs
- Share Quip docs in Slack
- Get notified of changes to your docs
- Available on iOS/Android/Desktop/Web
- Online/Offline

Join & Write a Comment

In this article you will get to know about pros and cons of storage drives HDD, SSD and SSHD.
Lithium-ion batteries area cornerstone of today's portable electronic devices, and even though they are relied upon heavily, their chemistry and origin are not of common knowledge. This article is about a device on which every smartphone, laptop, an…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

6 Experts available now in Live!

Get 1:1 Help Now