While setting up a Hyper-V server for Wayne and Justin to work with some VMs to troubleshoot the SBS 2003 to 2008 replication error, we ran into a roadblock with getting the Hyper-V Manager connected to the Hyper-V Server 2008 box:
Virtual Machines
Access denied. Unable to establish communication between ‘Hyper-V Server’ and ‘Hyper-V Manager’.
This is puzzling since the workstation has been connected to this particular Hyper-V server many times using other network profiles. The profile we created for the Microsoft folks was seemingly giving us the connection issue.
The fix took a bit of searching to find and needed to be accomplished on the Windows Vista system where the Hyper-V Manager was installed:
- Close the Hyper-V Manager
- Click Start and type: %windir% [Enter].
- A Windows Explorer window will open to the Windows directory.
- Type: dcomcnfg in the Search Windows field at the top right hand of the Explorer window.
- You will see the following in your search results:
- Right click on dcomcnfg and Run As Administrator.
- Authenticate with the local admin credentials if UAC prompts for credentials, or Continue if it does not.
- Open the Component Services node, then the Computers node, then right click on My Computer and click on Properties.
- Click on the COM Security tab.
- You will see the following:
- Click the Edit Limits button under Access Permissions.
- Enable Remote Access for Anonymous Logon
- Before and after shot:
- Click Apply and OK.
- Close the Component Services console and the Windows Explorer window.
- Start the Hyper-V Manager and continue through the UAC.
The virtual machines, if any, will show up in the Hyper-V Manager console after that.
Thanks to Augusto Alvarez for the clearest and exact explanation for the fix:
- Augusto Alvarez: Hyper-V Server: Installing, configuring and troubleshooting (about half way down).
Philip Elder
MPECS Inc.
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book
*All Mac on SBS posts will not be written on a Mac until we replace our now missing iMac! (previous blog post)
36 comments:
This is a great guide. Thanks a million.
By the way, it also works on Windows 7.
Thank you for this informative post. It solved my problem.
Thank you, it worked perfectly.
Wow! Thank you so much. Worked amazingly! I wonder what kind of security effects this has, if any.
Bradley,
I am not sure where the conflict arrises from.
We do have things buttoned down quite tightly via Group Policy, so there may be something there.
You are welcome to all!
Philip
This is great, you saved me a lot of time.
How did you figure THAT out? Well done, you saved me tons of time.
Micheal
Thank you for this guide. Very helpful!!
Regards
/David
Wow!Right at it! For three days I was installing and testing hypervisors. Citrix's did not discover half of my hardware, Vmware's - the other half, then came management issues. I knew from the beginning that I shoud stick to Microsoft, but the lack of a nice management console tripped me. Read about Admin Tools. FRESH installed Win 7 RTM 32 bit. Got this "Access Denied" Error.Decided that, because I have Hyper-V Server 2008 R2, I should manage it through a 64 bit OS. Installed Win 7 64bit. Got the error again. Was just about to erase everything and go back to vmware, when I read your detailed, step-by-step description. Decided to give it a try just befire hiting Enter on "Format" - litterally! And ... guess what - IT WORKED! :-) Thank you for taking your time to post such nice things here! You saved 4-days of nerves being wasted in vain. (Sorry for the long post - got emotional)
Yeah, didn't work too well for me. Still getting the same error.
@Justin May be five-parts guide http://blogs.technet.com/b/jhoward/archive/2008/04/04/part-5-domain-client-to-workgroup-server-hyper-v-remote-management-you-do-not-have-the-requested-permission-to-complete-this-task-contact-the-administrator-of-the-authorization-policy-for-the-computer-computername.aspx by John Howard will do for you.
Better links are for do-it-all utility http://blogs.technet.com/b/jhoward/archive/2008/11/14/configure-hyper-v-remote-management-in-seconds.aspx and the Hyper-V authorization model explained http://blogs.technet.com/b/jhoward/archive/2009/08/31/explaining-the-hyper-v-authorization-model-part-one.aspx
Excellent post. Resolved my issue. Thanks a lot.
thanks a lot, it worked!
Tried on Win 7 Ultimate & it works like charm.
Thanks.
Tried on Win7 Ultimate. It worked well. Thanks.
Wow! Amazing!
I've been using RDP to connect to our HYPERV host for the past two months, since I couldn't the HYPERV MGR to work on my PC to connect to the server.
Followed the steps in this guide, and now I'm able to manage the HYPERV server from my PC.
Thanks a million!
You are THE MAN!
Nowhere else could I find af solution to this strange problem.
Thank you!.
Dude... you rock...
Big 10X from Russia! It fix my truble!
Perfect!!! Thank You!
Working perfectly under Windows 7 x64, but not working under Server 2008.
Same user, same domain, following the same steps. Not sure what else to try without joining the HV to the domain.
Thank U very much !!
Perfect! That did it!
Searched for days...
Thank You.
Thank You.
Exactly the correct solution, perfectly documented. Thankyou very much.
Great. Thanks :)
Life Saver! Thanks!
Appreciated... thankyou!
Thanks :)
Worked like a charm
Windows 7 => Windows 2008 Core
thank you very much this was so annoying to get this sorted - great post thanks so much
Thank you, it worked on Windows 7 Ultimate SP1.
Hi,
I get this error message. Anonymous Logon has already local access and remote access allowed.
I tried HVRemote.
Problem is not solved.
Please help.
regards
Hi,
I get this error message. Anonymous Logon has already local access and remote access allowed.
I tried HVRemote.
Problem is not solved.
Please help.
regards
Hi,
After I reinstalled my Windows 7 machine I was not able to connect anymore and received the error: ""Access denied. Unable to establish communication between..."
After changing the DCOM setting I was able again to vonnect to my Hypervisor. I did this previously, nut I compltely forgot about it.
So thank you very much for this great article.
Cheers, Jan
Post a Comment