Cannot start service SPAdminv4 on computer – SharePoint 2010 Administration

If you’ve experienced this error (System.InvalidOperationException, “Cannot start service SPAdminv4 on computer ‘.’) after installing/rebooting a SharePoint 2010 server and failing consistently at the SharePoint 2010 Products Configuration Wizard, then this is likely to help:

(1) Browse to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\BIN

(2) In this directory Create a file called “WSSADMIN.EXE.CONFIG“

(3) Populate it with the following:

<configuration>

      <runtime>

<generatePublisherEvidence enabled=“false”/>

      </runtime>

</configuration>

(4) Start the “SharePoint 2010 Administration” services again

Now everything should be working….

This disables checking for CAS (Code Access Security) publisher policy. MSDN article, http://msdn.microsoft.com/en-us/library/bb629393.aspx

More details, read http://blogs.msdn.com/johan/archive/2009/11/12/make-sure-you-have-an-internet-connection-when-using-signed-assemblies.aspx and http://blogs.msdn.com/dsvc/archive/2008/06/24/troubleshooting-startup-issues-with-managed-application-having-authenticode-signature.aspx