http://blogs.technet.com/b/scvmm/archive/2012/12/17/kb-managing-hyper-v-hosts-using-virtual-machine-manager-fails-with-error-0x8033803b-after-installing-wmf-3-0.aspxWe’ve been getting a couple support calls regarding this issue so you may want to give this article a quick read. If attempts to manage Hyper-V hosts in VMM fail then check and see if Windows Management Framework (WMF) 3.0 ( KB2506143 ) is installed onen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/scvmm/archive/2012/12/17/kb-managing-hyper-v-hosts-using-virtual-machine-manager-fails-with-error-0x8033803b-after-installing-wmf-3-0.aspx#3547442Tue, 22 Jan 2013 08:45:42 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3547442Steffen H.<p>Hello,</p> <p>when will MS solve this error?</p> <p>MS should write in KB2506143 &nbsp;that there is an issue with this update. </p> <p>best regards</p> <p>Steffen</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3547442" width="1" height="1">