diff --git a/lib/puppet/configurer/downloader.rb b/lib/puppet/configurer/downloader.rb
index b3696201a..54075ee7e 100644
--- a/lib/puppet/configurer/downloader.rb
+++ b/lib/puppet/configurer/downloader.rb
@@ -1,80 +1,82 @@
 require 'puppet/configurer'
 require 'puppet/resource/catalog'
 
 class Puppet::Configurer::Downloader
   attr_reader :name, :path, :source, :ignore
 
   # Determine the timeout value to use.
   def self.timeout
     timeout = Puppet[:configtimeout]
     case timeout
     when String
       if timeout =~ /^\d+$/
         timeout = Integer(timeout)
       else
         raise ArgumentError, "Configuration timeout must be an integer"
       end
     when Integer # nothing
     else
       raise ArgumentError, "Configuration timeout must be an integer"
     end
 
     timeout
   end
 
   # Evaluate our download, returning the list of changed values.
   def evaluate
     Puppet.info "Retrieving #{name}"
 
     files = []
     begin
       Timeout.timeout(self.class.timeout) do
         catalog.apply do |trans|
           trans.changed?.find_all do |resource|
             yield resource if block_given?
             files << resource[:path]
           end
         end
       end
     rescue Puppet::Error, Timeout::Error => detail
       puts detail.backtrace if Puppet[:debug]
       Puppet.err "Could not retrieve #{name}: #{detail}"
     end
 
     files
   end
 
   def initialize(name, path, source, ignore = nil)
     @name, @path, @source, @ignore = name, path, source, ignore
   end
 
   def catalog
     catalog = Puppet::Resource::Catalog.new
     catalog.host_config = false
     catalog.add_resource(file)
     catalog
   end
 
   def file
     args = default_arguments.merge(:path => path, :source => source)
     args[:ignore] = ignore.split if ignore
     Puppet::Type.type(:file).new(args)
   end
 
   private
 
+  require 'sys/admin' if Puppet.features.microsoft_windows?
+
   def default_arguments
     {
       :path => path,
       :recurse => true,
       :source => source,
       :tag => name,
-      :owner => Process.uid,
-      :group => Process.gid,
+      :owner => Puppet.features.microsoft_windows? ? Sys::Admin.get_login : Process.uid,
+      :group => Puppet.features.microsoft_windows? ? 'S-1-0-0' : Process.gid,
       :purge => true,
       :force => true,
       :backup => false,
       :noop => false
     }
   end
 end
diff --git a/spec/unit/configurer/downloader_spec.rb b/spec/unit/configurer/downloader_spec.rb
index 215ef897f..69e5e6bf9 100755
--- a/spec/unit/configurer/downloader_spec.rb
+++ b/spec/unit/configurer/downloader_spec.rb
@@ -1,200 +1,219 @@
 #!/usr/bin/env rspec
 require 'spec_helper'
 
 require 'puppet/configurer/downloader'
 
 describe Puppet::Configurer::Downloader do
   require 'puppet_spec/files'
   include PuppetSpec::Files
   it "should require a name" do
     lambda { Puppet::Configurer::Downloader.new }.should raise_error(ArgumentError)
   end
 
   it "should require a path and a source at initialization" do
     lambda { Puppet::Configurer::Downloader.new("name") }.should raise_error(ArgumentError)
   end
 
   it "should set the name, path and source appropriately" do
     dler = Puppet::Configurer::Downloader.new("facts", "path", "source")
     dler.name.should == "facts"
     dler.path.should == "path"
     dler.source.should == "source"
   end
 
   it "should be able to provide a timeout value" do
     Puppet::Configurer::Downloader.should respond_to(:timeout)
   end
 
   it "should use the configtimeout, converted to an integer, as its timeout" do
     Puppet.settings.expects(:value).with(:configtimeout).returns "50"
     Puppet::Configurer::Downloader.timeout.should == 50
   end
 
   describe "when creating the file that does the downloading" do
     before do
       @dler = Puppet::Configurer::Downloader.new("foo", "path", "source")
     end
 
     it "should create a file instance with the right path and source" do
       Puppet::Type.type(:file).expects(:new).with { |opts| opts[:path] == "path" and opts[:source] == "source" }
       @dler.file
     end
 
     it "should tag the file with the downloader name" do
       Puppet::Type.type(:file).expects(:new).with { |opts| opts[:tag] == "foo" }
       @dler.file
     end
 
     it "should always recurse" do
       Puppet::Type.type(:file).expects(:new).with { |opts| opts[:recurse] == true }
       @dler.file
     end
 
     it "should always purge" do
       Puppet::Type.type(:file).expects(:new).with { |opts| opts[:purge] == true }
       @dler.file
     end
 
     it "should never be in noop" do
       Puppet::Type.type(:file).expects(:new).with { |opts| opts[:noop] == false }
       @dler.file
     end
 
-    it "should always set the owner to the current UID" do
-      Process.expects(:uid).returns 51
-      Puppet::Type.type(:file).expects(:new).with { |opts| opts[:owner] == 51 }
-      @dler.file
-    end
-
-    it "should always set the group to the current GID" do
-      Process.expects(:gid).returns 61
-      Puppet::Type.type(:file).expects(:new).with { |opts| opts[:group] == 61 }
-      @dler.file
+    describe "on POSIX" do
+      before :each do
+        Puppet.features.stubs(:microsoft_windows?).returns false
+      end
+
+      it "should always set the owner to the current UID" do
+        Process.expects(:uid).returns 51
+        Puppet::Type.type(:file).expects(:new).with { |opts| opts[:owner] == 51 }
+        @dler.file
+      end
+
+      it "should always set the group to the current GID" do
+        Process.expects(:gid).returns 61
+        Puppet::Type.type(:file).expects(:new).with { |opts| opts[:group] == 61 }
+        @dler.file
+      end
+    end
+
+    describe "on Windows", :if => Puppet.features.microsoft_windows? do
+      it "should always set the owner to the current user" do
+        Sys::Admin.expects(:get_login).returns 'foo'
+        Puppet::Type.type(:file).expects(:new).with { |opts| opts[:owner] == 'foo' }
+        @dler.file
+      end
+
+      it "should always set the group to nobody" do
+        Puppet::Type.type(:file).expects(:new).with { |opts| opts[:group] == 'S-1-0-0' }
+        @dler.file
+      end
     end
 
     it "should always force the download" do
       Puppet::Type.type(:file).expects(:new).with { |opts| opts[:force] == true }
       @dler.file
     end
 
     it "should never back up when downloading" do
       Puppet::Type.type(:file).expects(:new).with { |opts| opts[:backup] == false }
       @dler.file
     end
 
     it "should support providing an 'ignore' parameter" do
       Puppet::Type.type(:file).expects(:new).with { |opts| opts[:ignore] == [".svn"] }
       @dler = Puppet::Configurer::Downloader.new("foo", "path", "source", ".svn")
       @dler.file
     end
 
     it "should split the 'ignore' parameter on whitespace" do
       Puppet::Type.type(:file).expects(:new).with { |opts| opts[:ignore] == %w{.svn CVS} }
       @dler = Puppet::Configurer::Downloader.new("foo", "path", "source", ".svn CVS")
       @dler.file
     end
   end
 
   describe "when creating the catalog to do the downloading" do
     before do
       @path = make_absolute("/download/path")
       @dler = Puppet::Configurer::Downloader.new("foo", @path, make_absolute("source"))
     end
 
     it "should create a catalog and add the file to it" do
       catalog = @dler.catalog
       catalog.resources.size.should == 1
       catalog.resources.first.class.should == Puppet::Type::File
       catalog.resources.first.name.should == @path
     end
 
     it "should specify that it is not managing a host catalog" do
       @dler.catalog.host_config.should == false
     end
 
   end
 
   describe "when downloading" do
     before do
       @dl_name = tmpfile("downloadpath")
       source_name = tmpfile("source")
       File.open(source_name, 'w') {|f| f.write('hola mundo') }
       @dler = Puppet::Configurer::Downloader.new("foo", @dl_name, source_name)
     end
 
     it "should not skip downloaded resources when filtering on tags" do
       Puppet[:tags] = 'maytag'
       @dler.evaluate
 
       File.exists?(@dl_name).should be_true
     end
 
     it "should log that it is downloading" do
       Puppet.expects(:info)
       Timeout.stubs(:timeout)
 
       @dler.evaluate
     end
 
     it "should set a timeout for the download" do
       Puppet::Configurer::Downloader.expects(:timeout).returns 50
       Timeout.expects(:timeout).with(50)
 
       @dler.evaluate
     end
 
     it "should apply the catalog within the timeout block" do
       catalog = mock 'catalog'
       @dler.expects(:catalog).returns(catalog)
 
       Timeout.expects(:timeout).yields
 
       catalog.expects(:apply)
 
       @dler.evaluate
     end
 
     it "should return all changed file paths" do
       trans = mock 'transaction'
 
       catalog = mock 'catalog'
       @dler.expects(:catalog).returns(catalog)
       catalog.expects(:apply).yields(trans)
 
       Timeout.expects(:timeout).yields
 
       resource = mock 'resource'
       resource.expects(:[]).with(:path).returns "/changed/file"
 
       trans.expects(:changed?).returns([resource])
 
       @dler.evaluate.should == %w{/changed/file}
     end
 
     it "should yield the resources if a block is given" do
       trans = mock 'transaction'
 
       catalog = mock 'catalog'
       @dler.expects(:catalog).returns(catalog)
       catalog.expects(:apply).yields(trans)
 
       Timeout.expects(:timeout).yields
 
       resource = mock 'resource'
       resource.expects(:[]).with(:path).returns "/changed/file"
 
       trans.expects(:changed?).returns([resource])
 
       yielded = nil
       @dler.evaluate { |r| yielded = r }
       yielded.should == resource
     end
 
     it "should catch and log exceptions" do
       Puppet.expects(:err)
       Timeout.stubs(:timeout).raises(Puppet::Error, "testing")
 
       lambda { @dler.evaluate }.should_not raise_error
     end
   end
 end