diff --git a/changelogs/DP-45941.yml b/changelogs/DP-45941.yml
new file mode 100644
index 0000000000..698d538878
--- /dev/null
+++ b/changelogs/DP-45941.yml
@@ -0,0 +1,41 @@
+#
+# Write your changelog entry here. Every pull request must have a changelog yml file.
+#
+# Change types:
+# #############################################################################
+# You can use one of the following types:
+#  - Added: For new features.
+#  - Changed: For changes to existing functionality.
+#  - Deprecated: For soon-to-be removed features.
+#  - Removed: For removed features.
+#  - Fixed: For any bug fixes.
+#  - Security: In case of vulnerabilities.
+#
+# Format
+# #############################################################################
+# The format is crucial. Please follow the examples below. For reference, the requirements are:
+#  - All 3 parts are required and you must include "Type", "description" and "issue".
+#  - "Type" must be left aligned and followed by a colon.
+#  - "description" must be indented with 2 spaces followed by a colon
+#  - "issue" must be indented with 4 spaces followed by a colon.
+#  - "issue" is for the Jira ticket number only e.g. DP-1234
+#  - No extra spaces, indents, or blank lines are allowed.
+#
+# Example:
+# #############################################################################
+# Fixed:
+#  - description: Fixes scrolling on edit pages in Safari.
+#    issue: DP-13314
+#
+# You may add more than 1 description & issue for each type using the following format:
+# Changed:
+#  - description: Automating the release branch.
+#    issue: DP-10166
+#  - description: Second change item that needs a description.
+#    issue: DP-19875
+#  - description: Third change item that needs a description along with an issue.
+#    issue: DP-19843
+#
+Changed:
+  - description: Allow Editors to Reference Blocked Users in “Authored By” Field for all report filters.
+    issue: DP-45941
diff --git a/composer.json b/composer.json
index 8eb55fc173..c40447f32e 100644
--- a/composer.json
+++ b/composer.json
@@ -260,6 +260,7 @@
         "drupal/r4032login": "^2.2",
         "drupal/rabbit_hole": "^1.1",
         "drupal/redirect": "^1",
+        "drupal/reference_blocked_users": "^1.0",
         "drupal/require_on_publish": "^2.0",
         "drupal/scheduled_transitions": "^2.7",
         "drupal/schema_metatag": "^3.0",
diff --git a/composer.lock b/composer.lock
index e49be31450..c6de440a9f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "647812e9d2be3f7a8cc0e8b848f2dd8d",
+    "content-hash": "24a015b7f95fd29055ec182dcc6d789d",
     "packages": [
         {
             "name": "akamai-open/edgegrid-auth",
@@ -9796,6 +9796,57 @@
                 "source": "https://git.drupalcode.org/project/redirect"
             }
         },
+        {
+            "name": "drupal/reference_blocked_users",
+            "version": "1.0.5",
+            "source": {
+                "type": "git",
+                "url": "https://git.drupalcode.org/project/reference_blocked_users.git",
+                "reference": "1.0.5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://ftp.drupal.org/files/projects/reference_blocked_users-1.0.5.zip",
+                "reference": "1.0.5",
+                "shasum": "f2c899496150da781a04934e082b7fd6ffe21442"
+            },
+            "require": {
+                "drupal/core": "^10.1 || ^11"
+            },
+            "type": "drupal-module",
+            "extra": {
+                "drupal": {
+                    "version": "1.0.5",
+                    "datestamp": "1737408877",
+                    "security-coverage": {
+                        "status": "covered",
+                        "message": "Covered by Drupal's security advisory policy"
+                    }
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Drupal\\reference_blocked_users\\": "src"
+                }
+            },
+            "notification-url": "https://packages.drupal.org/8/downloads",
+            "license": [
+                "GPL-2.0-or-later"
+            ],
+            "authors": [
+                {
+                    "name": "Alaa Haddad (alaahaddad.com)",
+                    "homepage": "https://www.drupal.org/u/flashwebcenter",
+                    "role": "Maintainer"
+                }
+            ],
+            "description": "Permission to select all active and blocked users in any entity reference user field.",
+            "homepage": "https://drupal.org/project/reference_blocked_users",
+            "support": {
+                "source": "https://git.drupalcode.org/project/reference_blocked_users",
+                "issues": "https://drupal.org/project/issues/reference_blocked_users"
+            }
+        },
         {
             "name": "drupal/require_on_publish",
             "version": "2.0.0",
@@ -12022,12 +12073,12 @@
             "version": "v7.0.2",
             "source": {
                 "type": "git",
-                "url": "https://github.com/firebase/php-jwt.git",
+                "url": "https://github.com/googleapis/php-jwt.git",
                 "reference": "5645b43af647b6947daac1d0f659dd1fbe8d3b65"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/5645b43af647b6947daac1d0f659dd1fbe8d3b65",
+                "url": "https://api.github.com/repos/googleapis/php-jwt/zipball/5645b43af647b6947daac1d0f659dd1fbe8d3b65",
                 "reference": "5645b43af647b6947daac1d0f659dd1fbe8d3b65",
                 "shasum": ""
             },
diff --git a/conf/drupal/config/core.extension.yml b/conf/drupal/config/core.extension.yml
index ea3738276b..8d98dc56e3 100644
--- a/conf/drupal/config/core.extension.yml
+++ b/conf/drupal/config/core.extension.yml
@@ -211,6 +211,7 @@ module:
   rabbit_hole: 0
   redirect: 0
   redirect_404: 0
+  reference_blocked_users: 0
   require_on_publish: 0
   responsive_image: 0
   rest: 0
diff --git a/conf/drupal/config/user.role.editor.yml b/conf/drupal/config/user.role.editor.yml
index 9e651432e1..524d82f8f2 100644
--- a/conf/drupal/config/user.role.editor.yml
+++ b/conf/drupal/config/user.role.editor.yml
@@ -66,6 +66,7 @@ dependencies:
     - node
     - quick_node_clone
     - rabbit_hole
+    - reference_blocked_users
     - scheduled_transitions
     - system
     - taxonomy
@@ -238,6 +239,7 @@ permissions:
   - 'rabbit hole administer node'
   - 'rabbit hole bypass node'
   - 'rebuild node access permissions'
+  - 'reference blocked users'
   - 'reorder layout paragraphs components'
   - 'reschedule scheduled transitions media document'
   - 'reschedule scheduled transitions node advisory'
diff --git a/docroot/modules/custom/mass_fields/src/EntityAutocompleteMatcher.php b/docroot/modules/custom/mass_fields/src/EntityAutocompleteMatcher.php
index a10c8950fc..6b65350bdd 100644
--- a/docroot/modules/custom/mass_fields/src/EntityAutocompleteMatcher.php
+++ b/docroot/modules/custom/mass_fields/src/EntityAutocompleteMatcher.php
@@ -4,9 +4,11 @@
 
 use Drupal\Component\Utility\Html;
 use Drupal\Component\Utility\Tags;
+use Drupal\Core\Entity\EntityPublishedInterface;
 use Drupal\Core\Entity\EntityAutocompleteMatcher as DefaultAutocompleteMatcher;
 use Drupal\Core\Entity\EntityReferenceSelection\SelectionPluginManagerInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\user\UserInterface;
 
 /**
  * Matcher class to get autocompletion results for entity reference.
@@ -87,15 +89,24 @@ public function getMatches($target_type, $selection_handler, $selection_settings
           else {
             $key = "$label ($entity_id)";
           }
-          // Strip troublesome characters like starting/trailing white spaces, line breaks and tags.
-          $key = preg_replace('/\s\s+/', ' ', str_replace("\n", '', trim(Html::decodeEntities(strip_tags($key)))));
+          // Strip extra spaces, line breaks, and tags.
+          $key = preg_replace(
+            '/\s\s+/',
+            ' ',
+            str_replace("\n", '', trim(Html::decodeEntities(strip_tags($key))))
+          );
           // Names containing commas or quotes must be wrapped in quotes.
           $key = Tags::encode($key);
-          $entity = \Drupal::entityTypeManager()->getStorage($target_type)->load($entity_id);
+          $entity = $this->entityTypeManager
+            ->getStorage($target_type)
+            ->load($entity_id);
           if ($entity) {
-            if ($entity->getEntityType()->id() == 'node' && !$entity->isPublished()) {
+            if ($entity instanceof EntityPublishedInterface && !$entity->isPublished()) {
               $label .= " (unpublished)";
             }
+            if ($entity instanceof UserInterface && !$entity->isActive()) {
+              $label .= " (blocked)";
+            }
           }
           $matches[] = [
             'value' => $key,
diff --git a/docroot/modules/custom/mass_fields/tests/src/ExistingSite/BlockedUserAutocompleteLabelTest.php b/docroot/modules/custom/mass_fields/tests/src/ExistingSite/BlockedUserAutocompleteLabelTest.php
new file mode 100644
index 0000000000..e893305e44
--- /dev/null
+++ b/docroot/modules/custom/mass_fields/tests/src/ExistingSite/BlockedUserAutocompleteLabelTest.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\Tests\mass_fields\ExistingSite;
+
+use MassGov\Dtt\MassExistingSiteBase;
+
+/**
+ * Verifies blocked users are clearly marked in entity autocomplete labels.
+ */
+class BlockedUserAutocompleteLabelTest extends MassExistingSiteBase {
+
+  /**
+   * Tests blocked-user lifecycle in entity autocomplete results.
+   */
+  public function testBlockedUserAutocompleteLabel(): void {
+    $name_prefix = 'blocked_user_label_' . $this->randomMachineName(6);
+
+    // Step 1: Create an author and content authored by that user.
+    $author_user = $this->createUser([], $name_prefix . '_author');
+    $author_user->activate();
+    $author_user->save();
+
+    $node = $this->createNode([
+      'type' => 'info_details',
+      'title' => 'Blocked author coverage ' . $name_prefix,
+      'uid' => $author_user->id(),
+      'field_info_detail_overview' => '<p>Autocomplete coverage body</p>',
+    ]);
+    $this->assertEquals($author_user->id(), (int) $node->getOwnerId());
+
+    // Step 2: Block that author user.
+    $author_user->block();
+    $author_user->save();
+
+    // Step 3: Create another user who searches in autocomplete.
+    $editor_user = $this->createUser(['reference blocked users']);
+    $this->drupalLogin($editor_user);
+
+    // Additional active account with similar prefix for mixed results.
+    $active_user = $this->createUser([], $name_prefix . '_active');
+    $active_user->activate();
+    $active_user->save();
+
+    $matcher = \Drupal::service('mass_fields.autocomplete_matcher');
+    $matches = $matcher->getMatches('user', 'default', [], $name_prefix);
+
+    $labels = array_column($matches, 'label');
+    $labels_as_string = implode("\n", $labels);
+
+    $this->assertStringContainsString($active_user->getDisplayName(), $labels_as_string);
+    $this->assertStringContainsString($author_user->getDisplayName() . ' (blocked)', $labels_as_string);
+  }
+
+}
diff --git a/docroot/modules/custom/mass_views/tests/src/ExistingSite/BlockedAuthorsFilterTest.php b/docroot/modules/custom/mass_views/tests/src/ExistingSite/BlockedAuthorsFilterTest.php
new file mode 100644
index 0000000000..cd5ad3abc8
--- /dev/null
+++ b/docroot/modules/custom/mass_views/tests/src/ExistingSite/BlockedAuthorsFilterTest.php
@@ -0,0 +1,117 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\Tests\mass_views\ExistingSite;
+
+use Drupal\file\Entity\File;
+use Drupal\user\Entity\Role;
+use MassGov\Dtt\MassExistingSiteBase;
+use weitzman\DrupalTestTraits\Entity\MediaCreationTrait;
+
+/**
+ * Verifies blocked-user author filtering behavior in Documents admin view.
+ */
+class BlockedAuthorsFilterTest extends MassExistingSiteBase {
+
+  use MediaCreationTrait;
+
+  /**
+   * Ensure editors can filter by blocked users in "Authored by".
+   */
+  public function testEditorCanUseBlockedAuthorsFilter(): void {
+    $editor_role = Role::load('editor');
+    $this->assertNotNull($editor_role);
+    $this->assertTrue(
+      $editor_role->hasPermission('reference blocked users'),
+      'Editor role must include permission to reference blocked users.'
+    );
+
+    $author = $this->createUser([], 'blocked_author_' . $this->randomMachineName(6));
+    $author->activate();
+    $author->save();
+
+    $active_author = $this->createUser([], 'active_author_' . $this->randomMachineName(6));
+    $active_author->activate();
+    $active_author->save();
+
+    $this->createDocumentMediaForAuthor(
+      'Blocked author document ' . $this->randomMachineName(6),
+      (int) $author->id()
+    );
+    $active_author_title = 'Active author document ' . $this->randomMachineName(6);
+    $editable_media_id = $this->createDocumentMediaForAuthor(
+      $active_author_title,
+      (int) $active_author->id()
+    );
+
+    // Simulate former employee account lifecycle.
+    $author->block();
+    $author->save();
+
+    $editor = $this->createUser([], 'editor_user_' . $this->randomMachineName(6));
+    $editor->addRole('editor');
+    $editor->save();
+    $this->drupalLogin($editor);
+
+    $this->drupalGet('admin/ma-dash/documents');
+    $this->assertSession()->statusCodeEquals(200);
+    $this->assertSession()->fieldExists('edit-uid');
+
+    // Filter by blocked author in exposed "Authored by" filter.
+    $this->submitForm(
+      [
+        'uid' => $author->getAccountName() . ' (' . $author->id() . ')',
+      ],
+      'Filter',
+      'views-exposed-form-all-documents-page-1'
+    );
+
+    $this->assertSession()->pageTextContains('Blocked author document');
+    $this->assertSession()->pageTextNotContains($active_author_title);
+
+    // Also verify active users are still referenceable in the same field.
+    $this->submitForm(
+      [
+        'uid' => $active_author->getAccountName() . ' (' . $active_author->id() . ')',
+      ],
+      'Filter',
+      'views-exposed-form-all-documents-page-1'
+    );
+
+    $this->assertSession()->pageTextContains($active_author_title);
+    $this->assertSession()->pageTextNotContains('Blocked author document');
+
+    // Keep one editable media id for JS workflow coverage in companion test.
+    $this->assertGreaterThan(0, $editable_media_id);
+  }
+
+  /**
+   * Creates a published document media item for a specific author.
+   */
+  private function createDocumentMediaForAuthor(string $title, int $author_id): int {
+    $destination = 'public://' . $this->randomMachineName(12) . '.txt';
+    $file = File::create([
+      'uri' => $destination,
+    ]);
+    $file->setPermanent();
+    $file->save();
+
+    $src = 'core/tests/Drupal/Tests/Component/FileCache/Fixtures/llama-23.txt';
+    \Drupal::service('file_system')->copy($src, $destination, TRUE);
+
+    $media = $this->createMedia([
+      'bundle' => 'document',
+      'title' => $title,
+      'field_title' => $title,
+      'uid' => $author_id,
+      'field_upload_file' => [
+        'target_id' => $file->id(),
+      ],
+      'status' => 1,
+    ]);
+
+    return (int) $media->id();
+  }
+
+}
diff --git a/docroot/modules/custom/mass_views/tests/src/ExistingSiteJavascript/BlockedAuthorsMediaEditTest.php b/docroot/modules/custom/mass_views/tests/src/ExistingSiteJavascript/BlockedAuthorsMediaEditTest.php
new file mode 100644
index 0000000000..c3f2272ae3
--- /dev/null
+++ b/docroot/modules/custom/mass_views/tests/src/ExistingSiteJavascript/BlockedAuthorsMediaEditTest.php
@@ -0,0 +1,155 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\Tests\mass_views\ExistingSiteJavascript;
+
+use Drupal\file\Entity\File;
+use weitzman\DrupalTestTraits\Entity\MediaCreationTrait;
+use weitzman\DrupalTestTraits\ExistingSiteSelenium2DriverTestBase;
+
+/**
+ * Verifies editors can set blocked/active users in media Authored by field.
+ */
+class BlockedAuthorsMediaEditTest extends ExistingSiteSelenium2DriverTestBase {
+
+  use MediaCreationTrait;
+
+  /**
+   * Tests manual authored-by changes on media edit form.
+   */
+  public function testEditorCanChangeMediaAuthorToBlockedAndActive(): void {
+    $blocked_author = $this->createUser([], 'blocked_author_' . $this->randomMachineName(6));
+    $blocked_author->activate();
+    $blocked_author->save();
+    $blocked_author->block();
+    $blocked_author->save();
+
+    $active_author = $this->createUser([], 'active_author_' . $this->randomMachineName(6));
+    $active_author->activate();
+    $active_author->save();
+
+    $editor = $this->createUser([], 'editor_user_' . $this->randomMachineName(6));
+    $editor->addRole('editor');
+    $editor->save();
+
+    $editable_media_id = $this->createDocumentMediaForAuthor(
+      'Manual authored-by media ' . $this->randomMachineName(6),
+      (int) $active_author->id()
+    );
+
+    $this->drupalLogin($editor);
+
+    $this->drupalGet("media/$editable_media_id/edit");
+    $this->selectAutocompleteAuthor(
+      'edit-uid-0-target-id',
+      $blocked_author->getAccountName(),
+      $blocked_author->getAccountName()
+    );
+    $this->getSession()->getPage()->pressButton('Save');
+    $this->assertSession()->fieldValueEquals(
+      'edit-uid-0-target-id',
+      $blocked_author->getAccountName() . ' (' . $blocked_author->id() . ') - User'
+    );
+
+    $this->drupalGet("media/$editable_media_id/edit");
+    $this->selectAutocompleteAuthor(
+      'edit-uid-0-target-id',
+      $active_author->getAccountName(),
+      $active_author->getAccountName()
+    );
+    $this->getSession()->getPage()->pressButton('Save');
+    $this->assertSession()->fieldValueEquals(
+      'edit-uid-0-target-id',
+      $active_author->getAccountName() . ' (' . $active_author->id() . ') - User'
+    );
+  }
+
+  /**
+   * Selects an autocomplete option by typing and clicking dropdown item.
+   */
+  private function selectAutocompleteAuthor(string $field_id, string $search, string $option_text): void {
+    $field = $this->assertSession()->fieldExists($field_id);
+    if (!$field->isVisible()) {
+      $this->getSession()->executeScript(sprintf(
+        "(function (fieldId) {
+          const input = document.getElementById(fieldId);
+          if (!input) {
+            return;
+          }
+          const details = input.closest('details');
+          if (details) {
+            details.open = true;
+          }
+        })(%s);",
+        json_encode($field_id)
+      ));
+      $this->getSession()->wait(
+        8000,
+        "(() => { const el = document.getElementById(" . json_encode($field_id) . "); return !!el && el.offsetParent !== null; })()"
+      );
+      $field = $this->assertSession()->fieldExists($field_id);
+    }
+    $this->getSession()->executeScript(sprintf(
+      "(function (fieldId, searchTerm) {
+        const input = document.getElementById(fieldId);
+        if (!input) {
+          return;
+        }
+        input.focus();
+        input.value = searchTerm;
+        input.dispatchEvent(new Event('input', { bubbles: true }));
+        input.dispatchEvent(new KeyboardEvent('keydown', { key: 'a', bubbles: true }));
+        input.dispatchEvent(new KeyboardEvent('keyup', { key: 'a', bubbles: true }));
+      })(%s, %s);",
+      json_encode($field_id),
+      json_encode($search)
+    ));
+
+    $escaped = json_encode($option_text);
+    $this->getSession()->wait(
+      8000,
+      "document.querySelectorAll('ul.ui-autocomplete li').length > 0"
+    );
+    $this->getSession()->wait(
+      8000,
+      "Array.from(document.querySelectorAll('ul.ui-autocomplete li')).some(li => li.textContent.includes($escaped))"
+    );
+
+    $option = $this->getSession()->getPage()->find(
+      'xpath',
+      "(//ul[contains(@class, 'ui-autocomplete')]//li)[1]"
+    );
+    $this->assertNotNull($option);
+    $option->click();
+  }
+
+  /**
+   * Creates a published document media item for a specific author.
+   */
+  private function createDocumentMediaForAuthor(string $title, int $author_id): int {
+    $destination = 'public://' . $this->randomMachineName(12) . '.txt';
+    $file = File::create([
+      'uri' => $destination,
+    ]);
+    $file->setPermanent();
+    $file->save();
+
+    $src = 'core/tests/Drupal/Tests/Component/FileCache/Fixtures/llama-23.txt';
+    \Drupal::service('file_system')->copy($src, $destination, TRUE);
+
+    $media = $this->createMedia([
+      'bundle' => 'document',
+      'title' => $title,
+      'field_title' => $title,
+      'uid' => $author_id,
+      'field_upload_file' => [
+        'target_id' => $file->id(),
+      ],
+      'status' => 1,
+    ]);
+
+    return (int) $media->id();
+  }
+
+}