module VagrantPlugins
  module HostWindows
    module Cap
      class SSH
        # Set the ownership and permissions for SSH
        # private key
        #
        # @param [Vagrant::Environment] env
        # @param [Pathname] key_path
        def self.set_ssh_key_permissions(env, key_path)
          script_path = Host.scripts_path.join("set_ssh_key_permissions.ps1")
          result = Vagrant::Util::PowerShell.execute(
            script_path.to_s, "-KeyPath", key_path.to_s,
            module_path: Host.modules_path.to_s
          )
          if result.exit_code != 0
            raise Vagrant::Errors::PowerShellError,
              script: script_path,
              stderr: result.stderr
          end
          result
        end
      end
    end
  end
end

module VagrantPlugins
  module HostWindows
    module Cap
      class SSH
        # Set the ownership and permissions for SSH
        # private key
        #
        # @param [Vagrant::Environment] env
        # @param [Pathname] key_path
        def self.set_ssh_key_permissions(env, key_path)
          script_path = Host.scripts_path.join("set_ssh_key_permissions.ps1")
          result = Vagrant::Util::PowerShell.execute(
            script_path.to_s, key_path.to_s,
            module_path: Host.modules_path.to_s
          )
          if result.exit_code != 0
            raise Vagrant::Errors::PowerShellError,
              script: script_path,
              stderr: result.stderr
          end
          result
        end
      end
    end
  end
end

--- 
+++ 
@@ -10,7 +10,7 @@
         def self.set_ssh_key_permissions(env, key_path)
           script_path = Host.scripts_path.join("set_ssh_key_permissions.ps1")
           result = Vagrant::Util::PowerShell.execute(
-            script_path.to_s, key_path.to_s,
+            script_path.to_s, "-KeyPath", key_path.to_s,
             module_path: Host.modules_path.to_s
           )
           if result.exit_code != 0
Include key path flag when calling script
