{"id":14,"date":"2014-02-19T21:20:02","date_gmt":"2014-02-19T21:20:02","guid":{"rendered":"http:\/\/www.theruralsysadmin.com\/?p=14"},"modified":"2014-02-19T21:20:02","modified_gmt":"2014-02-19T21:20:02","slug":"hyper-v-2012-r2-guest-2-unknown-devices","status":"publish","type":"post","link":"http:\/\/www.theruralsysadmin.com\/?p=14","title":{"rendered":"Hyper-V 2012 r2 guest 2 &#8220;unknown devices&#8221;?"},"content":{"rendered":"<p>If you are running a Hyper-V 2012 r2 host with guest VMs that are of earlier versions of windows you will notice a couple of unknown devices in the device manager, even after installing the hyper-v integration services on the guest. When I first noticed this I thought maybe some driver didn&#8217;t install correctly, but after doing a little digging i found a Microsoft Knowledge Base article dealing with this very subject <a title=\"kb2925727\" href=\"http:\/\/support.microsoft.com\/kb\/2925727\" target=\"_blank\">kb2925727<\/a>. The article states \u00a0 &#8220;On a Windows Server 2012 R2 Datacenter Hyper-V host, you may see 2\u00a0<strong>unknown device\u00a0<\/strong>under\u00a0<b>Other Devices\u00a0<\/b>in device manager\u00a0of any virtual machine running operating systems earlier than Windows Server 2012 R2.\u00a0These Virtual Devices (VDev) are provided for Automatic Virtual Machine Activation (AVMA) to communicate with the host. AVMA is only supported on virtual machines running Windows Server 2012 R2 or later versions of operating systems.\u00a0The unknown devices are\u00a0harmless and can be ignored. &#8221; So there you go.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you are running a Hyper-V 2012 r2 host with guest VMs that are of earlier versions of windows you will notice a couple of unknown devices in the device manager, even after installing the hyper-v integration services on the guest. When I first noticed this I thought maybe some driver didn&#8217;t install correctly, but [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,3,8,6,9,10],"tags":[11,13,12],"class_list":["post-14","post","type-post","status-publish","format-standard","hentry","category-hyper-v","category-it","category-microsoft","category-server","category-virtualization","category-vm","tag-hyper-v-2","tag-microsoft-2","tag-virtual"],"_links":{"self":[{"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=\/wp\/v2\/posts\/14","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14"}],"version-history":[{"count":1,"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=\/wp\/v2\/posts\/14\/revisions"}],"predecessor-version":[{"id":15,"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=\/wp\/v2\/posts\/14\/revisions\/15"}],"wp:attachment":[{"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.theruralsysadmin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}