diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0069e98..9cfec98 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 ## Changelog
 
+### [1.6.0.1](https://github.com/stoned/rd-winrm-plugin/releases/tag/1.6.0.1)
+- Use Gem winrm 2.x which permit non-administrator session, see
+https://github.com/WinRb/WinRM/issues/194
+- Use Gem winrm-fs 1.x
+- Allow WinRM transport protocol to be specified (HTTP/HTTPS) so
+HTTPS can be selected without using 'ssl' authentication type.
+- Allow empty defaut user and password at the project level, or
+above, so only "overriding" in job options can be use instead
+- Mention in README the installation of Gem rubyntlm so NTLM
+authentification can be used, via authentication type 'negotiate'.
+
 ### [1.6.0](https://github.com/NetDocuments/rd-winrm-plugin/releases/tag/1.6.0)
 Enables basic auth (GH-34)
 
diff --git a/README.md b/README.md
index e681863..89707cb 100644
--- a/README.md
+++ b/README.md
@@ -18,8 +18,9 @@ Ubuntu: `apt-get install make ruby ruby-dev`
 CentOS/RHEL: `yum install make ruby ruby-devel`
 
 Install following gems:  
-`gem install winrm -v 1.8.1`  
-`gem install winrm-fs -v 0.4.3`  
+`gem install winrm -v 2.1.2`  
+`gem install winrm-fs -v 1.0.1`  
+`gem install rubyntlm`
 
 Download from the [releases page](https://github.com/NetDocuments/rd-winrm-plugin/releases).
 
@@ -44,6 +45,7 @@ Settings:
 `Username` Put here username for negotiate, plaintext or ssl auth  
 `Password` Put here password for negotiate, plaintext or ssl auth  
 `Auth type` choose here negotiate, kerberos, plaintext or ssl  
+`WinRM transport protocol` set protocol for winrm transport (Default: http)
 `WinRM port` set port for winrm (Default: 5985/5986 for http/https)  
 `Shell` choose here powershell, cmd or wql  
 `WinRM timeout` put here time in seconds (useful for long running commands)  
diff --git a/contents/winrmcp.rb b/contents/winrmcp.rb
index 7cada4a..0309093 100755
--- a/contents/winrmcp.rb
+++ b/contents/winrmcp.rb
@@ -1,11 +1,20 @@
 #!/usr/bin/ruby
-gem 'winrm-fs', '= 0.4.3'
+gem 'winrm-fs', '= 1.0.1'
 require 'winrm-fs'
 auth = ENV['RD_CONFIG_AUTHTYPE']
-user = ENV['RD_CONFIG_USER'].dup # for some reason these strings is frozen, so we duplicate it
-pass = ENV['RD_CONFIG_PASS'].dup
+if ENV['RD_CONFIG_USER'] # allow empy (default) password (override used)
+  user = ENV['RD_CONFIG_USER'].dup # for some reason this string is frozen, so we duplicate it
+else
+  user =''
+end
+if ENV['RD_CONFIG_PASS'] # allow empy (default) password (override used)
+  pass = ENV['RD_CONFIG_PASS'].dup # for some reason this string is frozen, so we duplicate it
+else
+  pass = ''
+end
 host = ENV['RD_NODE_HOSTNAME']
 port = ENV['RD_CONFIG_WINRMPORT']
+transport = ENV['RD_CONFIG_WINRMTRANSPORT']
 shell = ENV['RD_CONFIG_SHELL']
 realm = ENV['RD_CONFIG_KRB5_REALM']
 override = ENV['RD_CONFIG_ALLOWOVERRIDE']
@@ -18,7 +27,7 @@
 if auth == 'ssl'
   endpoint = "https://#{host}:#{port}/wsman"
 else
-  endpoint = "http://#{host}:#{port}/wsman"
+  endpoint = "#{transport}://#{host}:#{port}/wsman"
 end
 
 # Wrapper to fix: "not setting executing flags by rundeck for 2nd file in plugin"
@@ -43,20 +52,35 @@
   end
 end
 
+connections_opts = {
+  endpoint: endpoint
+}
+
+connections_opts[:operation_timeout] = ENV['RD_CONFIG_WINRMTIMEOUT'].to_i if ENV['RD_CONFIG_WINRMTIMEOUT']
+
 case auth
 when 'negotiate'
-  winrm = WinRM::WinRMWebService.new(endpoint, :negotiate, user: user, pass: pass)
+  connections_opts[:transport] = :negotiate
+  connections_opts[:user] = user
+  connections_opts[:password] = pass
 when 'kerberos'
-  winrm = WinRM::WinRMWebService.new(endpoint, :kerberos, realm: realm)
+  connections_opts[:transport] = :kerberos
+  connections_opts[:realm] = realm
 when 'plaintext'
-  winrm = WinRM::WinRMWebService.new(endpoint, :plaintext, user: user, pass: pass, disable_sspi: true)
+  connections_opts[:transport] = :plaintext
+  connections_opts[:user] = user
+  connections_opts[:password] = pass
+  connections_opts[:disable_sspi] = true
 when 'ssl'
-  winrm = WinRM::WinRMWebService.new(endpoint, :ssl, user: user, pass: pass, disable_sspi: true)
+  connections_opts[:transport] = :ssl
+  connections_opts[:user] = user
+  connections_opts[:password] = pass
+  connections_opts[:disable_sspi] = true
 else
-  fail "Invalid authtype '#{auth}' specified, expected: kerberos, plaintext, ssl."
+  fail "Invalid authtype '#{auth}' specified, expected: negotiate, kerberos, plaintext, ssl."
 end
 
-winrm.set_timeout(ENV['RD_CONFIG_WINRMTIMEOUT'].to_i) if ENV['RD_CONFIG_WINRMTIMEOUT']
+winrm = WinRM::Connection.new(connections_opts)
 
 file_manager = WinRM::FS::FileManager.new(winrm)
 
diff --git a/contents/winrmexe.rb b/contents/winrmexe.rb
index 92a9670..0559baf 100755
--- a/contents/winrmexe.rb
+++ b/contents/winrmexe.rb
@@ -1,11 +1,20 @@
 #!/usr/bin/ruby
-gem 'winrm', '= 1.8.1'
+gem 'winrm', '= 2.1.2'
 require 'winrm'
 auth = ENV['RD_CONFIG_AUTHTYPE']
-user = ENV['RD_CONFIG_USER'].dup # for some reason these strings is frozen, so we duplicate it
-pass = ENV['RD_CONFIG_PASS'].dup
+if ENV['RD_CONFIG_USER'] # allow empy (default) password (override used)
+  user = ENV['RD_CONFIG_USER'].dup # for some reason this string is frozen, so we duplicate it
+else
+  user =''
+end
+if ENV['RD_CONFIG_PASS'] # allow empy (default) password (override used)
+  pass = ENV['RD_CONFIG_PASS'].dup # for some reason this string is frozen, so we duplicate it
+else
+  pass = ''
+end
 host = ENV['RD_NODE_HOSTNAME']
 port = ENV['RD_CONFIG_WINRMPORT']
+transport = ENV['RD_CONFIG_WINRMTRANSPORT']
 shell = ENV['RD_CONFIG_SHELL']
 realm = ENV['RD_CONFIG_KRB5_REALM']
 command = ENV['RD_EXEC_COMMAND']
@@ -17,10 +26,8 @@
 if auth == 'ssl'
   endpoint = "https://#{host}:#{port}/wsman"
 else
-  endpoint = "http://#{host}:#{port}/wsman"
+  endpoint = "#{transport}://#{host}:#{port}/wsman"
 end
-ooutput = ''
-eoutput = ''
 
 # Wrapper to fix: "not setting executing flags by rundeck for 2nd file in plugin"
 # # https://github.com/rundeck/rundeck/issues/1421
@@ -91,55 +98,52 @@ def stderr_text(stderr)
   end
 end
 
+connections_opts = {
+  endpoint: endpoint
+}
+
+connections_opts[:operation_timeout] = ENV['RD_CONFIG_WINRMTIMEOUT'].to_i if ENV['RD_CONFIG_WINRMTIMEOUT']
+
 case auth
 when 'negotiate'
-  winrm = WinRM::WinRMWebService.new(endpoint, :negotiate, user: user, pass: pass)
+  connections_opts[:transport] = :negotiate
+  connections_opts[:user] = user
+  connections_opts[:password] = pass
 when 'kerberos'
-  winrm = WinRM::WinRMWebService.new(endpoint, :kerberos, realm: realm)
+  connections_opts[:transport] = :kerberos
+  connections_opts[:realm] = realm
 when 'plaintext'
-  winrm = WinRM::WinRMWebService.new(endpoint, :plaintext, user: user, pass: pass, disable_sspi: true)
+  connections_opts[:transport] = :plaintext
+  connections_opts[:user] = user
+  connections_opts[:password] = pass
+  connections_opts[:disable_sspi] = true
 when 'ssl'
-  winrm = WinRM::WinRMWebService.new(endpoint, :ssl, user: user, pass: pass, disable_sspi: true)
+  connections_opts[:transport] = :ssl
+  connections_opts[:user] = user
+  connections_opts[:password] = pass
+  connections_opts[:disable_sspi] = true
 else
-  fail "Invalid authtype '#{auth}' specified, expected: kerberos, plaintext, ssl."
+  fail "Invalid authtype '#{auth}' specified, expected: negotiate, kerberos, plaintext, ssl."
 end
 
-winrm.set_timeout(ENV['RD_CONFIG_WINRMTIMEOUT'].to_i) if ENV['RD_CONFIG_WINRMTIMEOUT']
+winrm = WinRM::Connection.new(connections_opts)
 
+shell_session = nil
 case shell
 when 'powershell'
-  result = winrm.create_executor().run_powershell_script(command)
+  shell_session = winrm.shell(:powershell)
+  result = shell_session.run(command)
 when 'cmd'
-  result = winrm.create_executor().run_cmd(command)
+  shell_session = winrm.shell(:cmd)
+  result = shell_session.run(command)
 when 'wql'
-  result = winrm.wql(command)
+  result = winrm.run_wql(command)
 end
 
-result[:data].each do |output_line|
-  eoutput = "#{eoutput}#{output_line[:stderr]}" if output_line.key?(:stderr)
-  ooutput = "#{ooutput}#{output_line[:stdout]}" if output_line.key?(:stdout)
+if shell_session != nil
+  STDERR.print stderr_text(result.stderr) if result.stderr != ''
+  STDOUT.print result.stdout
+  exit result.exitcode if result.exitcode !=0
+else # WQL
+  STDOUT.print result
 end
-
-STDERR.print stderr_text(eoutput) if eoutput != ''
-STDOUT.print ooutput
-exit result[:exitcode] if result[:exitcode] != 0
-
-# winrm.powershell(command) do |stdout, stderr|
-#   STDOUT.print stdout
-#   STDERR.print stderr
-# end
-
-# result = winrm.cmd(command)
-# if result[:exitcode] != 0
-#    result[:data].each do |output_line|
-#          if output_line.has_key?(:stderr)
-#                  STDOUT.print output_line[:stderr]
-#                      end
-#            end
-# else
-#    result[:data].each do |output_line|
-#          if output_line.has_key?(:stdout)
-#                  STDOUT.print output_line[:stdout]
-#                      end
-#            end
-# end
diff --git a/plugin.yaml b/plugin.yaml
index 5eb4e82..d786f30 100644
--- a/plugin.yaml
+++ b/plugin.yaml
@@ -58,6 +58,16 @@ providers:
         scope: Instance
         renderingOptions:
           instance-scope-node-attribute: "allowoverride"
+      - name: winrmtransport
+        title: WinRM transport protocol
+        description: "WinRM transport protocol (Default: http or https when ssl is selected for Authentication type)"
+        type: Select
+        default: "http"
+        values: "http, https"
+        required: true
+        scope: Instance
+        renderingOptions:
+          instance-scope-node-attribute: "winrmtransport"
       - name: winrmport
         title: WinRM port
         description: "WinRM port (Default: 5985/5986 for http/https)"
@@ -137,6 +147,16 @@ providers:
         scope: Instance
         renderingOptions:
           instance-scope-node-attribute: "allowoverride"
+      - name: winrmtransport
+        title: WinRM transport protocol
+        description: "WinRM transport protocol (Default: http or https when ssl is selected for Authentication type)"
+        type: Select
+        default: "http"
+        values: "http, https"
+        required: true
+        scope: Instance
+        renderingOptions:
+          instance-scope-node-attribute: "winrmtransport"
       - name: winrmport
         title: WinRM port
         description: "WinRM port (Default: 5985/5986 for http/https)"