diff --git a/lib/ansible/modules/windows/win_regedit.ps1 b/lib/ansible/modules/windows/win_regedit.ps1
index 8b02c9fae28..a3ee4996282 100644
--- a/lib/ansible/modules/windows/win_regedit.ps1
+++ b/lib/ansible/modules/windows/win_regedit.ps1
@@ -138,6 +138,27 @@ Function Compare-RegistryProperties($existing, $new) {
     return $mismatch
 }
 
+Function Get-DiffValueString($type, $value) {
+    $enum = [Microsoft.Win32.RegistryValueKind]
+    if ($type -in @($enum::Binary, $enum::None)) {
+        $hex_values = @()
+        foreach ($dec_value in $value) {
+            $hex_values += "0x$("{0:x2}" -f $dec_value)"
+        }
+        $diff_value = "$($type):[$($hex_values -join ", ")]"
+    } elseif ($type -eq $enum::DWord) {
+        $diff_value = "$($type):0x$("{0:x8}" -f $value)"
+    } elseif ($type -eq $enum::QWord) {
+        $diff_value = "$($type):0x$("{0:x16}" -f $value)"
+    } elseif ($type -eq $enum::MultiString) {
+        $diff_value = "$($type):[$($value -join ", ")]"
+    } else {
+        $diff_value = "$($type):$value"
+    }
+
+    return $diff_value
+}
+
 # convert property names "" to $null as "" refers to (Default)
 if ($name -eq "") {
     $name = $null
@@ -268,10 +289,16 @@ if ($state -eq "present") {
             $result.changed = $true
 
             if ($diff_mode) {
-                $result.diff.prepared += @"
-[$path]
--"$name" = "$existing_type`:$existing_data"
-+"$name" = "$type`:$data"               
+                if ($result.diff.prepared) {
+                    $key_prefix = "+"
+                } else {
+                    $key_prefix = ""
+                }
+                
+                $result.diff.prepared = @"
+$key_prefix[$path]
+-"$name" = "$(Get-DiffValueString -type $existing_type -value $existing_data)"
++"$name" = "$(Get-DiffValueString -type $type -value $data)"
 "@
             }
         }
@@ -286,9 +313,15 @@ if ($state -eq "present") {
         }
         $result.changed = $true
         if ($diff_mode) {
-            $result.diff.prepared += @"
-[$path]
-+"$name" = "$type`:$data"
+            if ($result.diff.prepared) {
+                $key_prefix = "+"
+            } else {
+                $key_prefix = ""
+            }
+            
+            $result.diff.prepared = @"
+$key_prefix[$path]
++"$name" = "$(Get-DiffValueString -type $type -value $data)"
 "@
         }
     }
@@ -328,7 +361,7 @@ if ($state -eq "present") {
                 if ($diff_mode) {
                     $result.diff.prepared += @"
 [$path]
--"$name" = "$existing_type`:$existing_data"
+-"$name" = "$(Get-DiffValueString -type $existing_type -value $existing_data)"
 "@
                 }
             }
diff --git a/test/integration/targets/win_regedit/tasks/main.yml b/test/integration/targets/win_regedit/tasks/main.yml
index 50b2cae4ca7..e8468a096eb 100644
--- a/test/integration/targets/win_regedit/tasks/main.yml
+++ b/test/integration/targets/win_regedit/tasks/main.yml
@@ -9,9 +9,6 @@
   - '{{test_win_regedit_classes_key}}'
 
 - block:
-  - name: run old tests for PR only
-    include_tasks: old_tests.yml
-
   - name: run tests for each property type
     include_tasks: create_tests.yml
     vars:
diff --git a/test/integration/targets/win_regedit/tasks/old_tests.yml b/test/integration/targets/win_regedit/tasks/old_tests.yml
deleted file mode 100644
index 11aa02e3e84..00000000000
--- a/test/integration/targets/win_regedit/tasks/old_tests.yml
+++ /dev/null
@@ -1,473 +0,0 @@
-# test code for the win_regedit module
-# (c) 2014, Michael DeHaan <michael.dehaan@gmail.com>
-
-# This file is part of Ansible
-#
-# Ansible is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Ansible is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
-
-# clear the area of the registry we are using for tests
-
-# test mangled registry key gets caught following https://github.com/ansible/ansible-modules-extras/issues/2412
-
-- name: test mangled registry key is caught (avoids bizare error message from powershell)
-  win_regedit:
-    key: HKCU\Software
-    value: invalid_key
-    data: invalid_key
-    datatype: string
-  register: check00_result
-  ignore_errors: True
-
-- assert:
-    that:
-      - "check00_result.failed == true"
-      - "check00_result.msg == 'path: HKCU\\Software is not a valid powershell path, see module documentation for examples.'"
-
-- name: remove setting
-  win_regedit:
-    key: 'HKCU:\SOFTWARE\Cow Corp'
-    state: absent
-
-- name: check basic set works
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hello
-    data: world
-  register: check01_result
-
-- assert:
-    that:
-      - "check01_result.changed == true"
-
-- name: check that setting the same again is not changed
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hello
-    data: world
-  register: check02_result
-
-- assert:
-    that:
-      - "check02_result.changed == false"
-
-# binary mode checks
-# tests with 'hex:' prefix (as intended)
-
-- name: check binary with hex(colon) prefix
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: hex:be,ef,be,ef,be,ef,be,ef,be,ef
-    datatype: binary
-  register: check03_result
-
-- assert:
-    that:
-      - "check03_result.changed == true"
-
-- name: check binary with hex(colon) prefix not modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: hex:be,ef,be,ef,be,ef,be,ef,be,ef
-    datatype: binary
-  register: check04_result
-
-- assert:
-    that:
-      - "check04_result.changed == false"
-
-- name: check binary with hex(colon) prefix modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: hex:de,ad,be,ef,de,ad,be,ef,de,ad,be,ef
-    datatype: binary
-  register: check05_result
-
-- assert:
-    that:
-      - "check05_result.changed == true"
-
-# reset
-- name: reset test
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    state: absent
-  register: check06_result
-
-- assert:
-    that:
-      - "check06_result.changed == true"
-
-# check without hex(colon) prefix
-
-# tests without 'hex:' prefix (optional)
-- name: check binary with hex(colon) prefix
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: be,ef,be,ef,be,ef,be,ef,be,ef
-    datatype: binary
-  register: check13_result
-
-- assert:
-    that:
-      - "check13_result.changed == true"
-
-- name: check binary without hex(colon) prefix not modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: be,ef,be,ef,be,ef,be,ef,be,ef
-    datatype: binary
-  register: check14_result
-
-- assert:
-    that:
-      - "check14_result.changed == false"
-
-- name: check binary without hex(colon) prefix modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: de,ad,be,ef,de,ad,be,ef,de,ad,be,ef
-    datatype: binary
-  register: check15_result
-
-- assert:
-    that:
-      - "check15_result.changed == true"
-
-# reset
-- name: reset test
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    state: absent
-  register: check16_result
-
-- assert:
-    that:
-      - "check16_result.changed == true"
-
-# check mixed case hex values with hex: prefix
-
-- name: check mixed case binary with hex(colon) prefix
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: hex:be,EF,be,EF,be,EF,be,EF,be,EF
-    datatype: binary
-  register: check23_result
-
-- assert:
-    that:
-      - "check23_result.changed == true"
-
-- name: check mixed case binary with hex(colon) prefix not modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: hex:be,EF,be,EF,be,EF,be,EF,be,EF
-    datatype: binary
-  register: check24_result
-
-- assert:
-    that:
-      - "check24_result.changed == false"
-
-- name: check mixed case binary with hex(colon) prefix modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: hex:DE,ad,be,EF,DE,ad,be,EF,DE,ad,be,EF
-    datatype: binary
-  register: check25_result
-
-- assert:
-    that:
-      - "check25_result.changed == true"
-
-# reset
-- name: reset test
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    state: absent
-  register: check26_result
-
-- assert:
-    that:
-      - "check26_result.changed == true"
-
-# check mixed case without hex: prefix
-
-# tests without 'hex:' prefix (optional)
-- name: check mixed case binary without hex(colon) prefix
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: be,EF,be,EF,be,EF,be,EF,be,EF
-    datatype: binary
-  register: check33_result
-
-- assert:
-    that:
-      - "check33_result.changed == true"
-
-- name: check mixed case binary without hex(colon) prefix not modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: be,EF,be,EF,be,EF,be,EF,be,EF
-    datatype: binary
-  register: check34_result
-
-- assert:
-    that:
-      - "check34_result.changed == false"
-
-- name: check mixed case binary without hex(colon) prefix modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: DE,ad,be,EF,DE,ad,be,EF,DE,ad,be,EF
-    datatype: binary
-  register: check35_result
-
-- assert:
-    that:
-      - "check35_result.changed == true"
-
-# reset
-- name: reset test
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    state: absent
-  register: check36_result
-
-- assert:
-    that:
-      - "check36_result.changed == true"
-
-# check colon separated hex values with hex: prefix
-
-- name: check colon separated hex values with hex(colon) prefix
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: hex:be:ef:be:ef:be:ef:be:ef:be:ef
-    datatype: binary
-  register: check43_result
-
-- assert:
-    that:
-      - "check43_result.changed == true"
-
-- name: check colon separated binary with hex(colon) prefix not modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: hex:be:ef:be:ef:be:ef:be:ef:be:ef
-    datatype: binary
-  register: check44_result
-
-- assert:
-    that:
-      - "check44_result.changed == false"
-
-- name: check colon separated binary with hex(colon) prefix modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: hex:de:ad:be:ef:de:ad:be:ef:de:ad:be:ef
-    datatype: binary
-  register: check45_result
-
-- assert:
-    that:
-      - "check45_result.changed == true"
-
-# reset
-- name: reset test
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    state: absent
-  register: check46_result
-
-- assert:
-    that:
-      - "check46_result.changed == true"
-
-# check colon separated hex values without hex(colon) prefix
-
-# tests without 'hex:' prefix (optional)
-- name: check colon separated binary with hex(colon) prefix
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: be:ef:be:ef:be:ef:be:ef:be:ef
-    datatype: binary
-  register: check53_result
-
-- assert:
-    that:
-      - "check53_result.changed == true"
-
-- name: check colon separated binary without hex(colon) prefix not modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: be:ef:be:ef:be:ef:be:ef:be:ef
-    datatype: binary
-  register: check54_result
-
-- assert:
-    that:
-      - "check54_result.changed == false"
-
-- name: check colon separated binary without hex(colon) prefix modified
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    data: de:ad:be:ef:de:ad:be:ef:de:ad:be:ef
-    datatype: binary
-  register: check55_result
-
-- assert:
-    that:
-      - "check55_result.changed == true"
-
-# reset
-- name: reset test
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hellobinary
-    state: absent
-  register: check56_result
-
-- assert:
-    that:
-      - "check56_result.changed == true"
-
-# test empty data value (some things depend on this, having no data is not equivalent)
-
-- name: set an empty data value
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: helloempty
-    data: ""
-  register: check61_result
-
-- assert:
-    that:
-      - "check61_result.changed == true"
-
-- name: set an empty data value again (should not change)
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: helloempty
-    data: ""
-  register: check62_result
-
-- assert:
-    that:
-      - "check62_result.changed == false"
-
-# check can use yaml array of bytes as input 
-- name: regedit binary data using yaml syntax 
-  win_regedit:
-      key: 'HKCU:\SOFTWARE\Cow Corp'
-      value: hellobinaryfromyaml
-      data: [0x21, 0xb3, 0x33, 0xf9, 0x0d, 0xff, 0xd0, 0x01]
-      datatype: binary
-  register: check63_result
-
-- assert:
-    that:
-      - "check63_result.changed == true"
-
-- name: regedit binary data using yaml syntax again
-  win_regedit:
-      key: 'HKCU:\SOFTWARE\Cow Corp'
-      value: hellobinaryfromyaml
-      data: [0x21, 0xb3, 0x33, 0xf9, 0x0d, 0xff, 0xd0, 0x01]
-      datatype: binary
-  register: check64_result
-
-- assert:
-    that:
-      - "check64_result.changed == false"
-
-# test dword
-
-- name: check basic set dword works
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hello_dword
-    data: 00000000
-    datatype: dword
-  register: check71_result
-
-- assert:
-    that:
-      - "check71_result.changed == true"
-
-- name: check that setting the same dword again is not changed
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: hello_dword
-    data: 00000000
-    datatype: dword
-  register: check72_result
-
-- assert:
-    that:
-      - "check72_result.changed == false"
-
-# https://github.com/ansible/ansible/issues/26049
-# module reports change on dword with hex value even with same value
-- name: create hex value with prepending 0x
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: full_hex_dword
-    data: 0xffffffff
-    datatype: dword
-  register: dword_create
-
-- name: change hex value and report no changes
-  win_regedit:
-    key: HKCU:\Software\Cow Corp
-    value: full_hex_dword
-    data: 0xffffffff
-    datatype: dword
-  register: dword_create_again
-
-- assert:
-    that:
-    - not dword_create_again|changed
-
-# tear down
-
-- name: remove registry key used for testing
-  win_regedit:
-    key: 'HKCU:\SOFTWARE\Cow Corp'
-    state: absent
-
-
-# END OF win_regedit tests