diff --git a/Oqtane.Client/Modules/Admin/Modules/Settings.razor b/Oqtane.Client/Modules/Admin/Modules/Settings.razor
index 82ca6a69..bde62f80 100644
--- a/Oqtane.Client/Modules/Admin/Modules/Settings.razor
+++ b/Oqtane.Client/Modules/Admin/Modules/Settings.razor
@@ -73,27 +73,29 @@
                             </div>
                         </div>
                         <div class="row mb-1 align-items-center">
-                            <Label Class="col-sm-3" For="page" HelpText="The page that the module is located on" ResourceKey="Page">Page: </Label>
+                            <Label Class="col-sm-3" For="page" HelpText="The page that the module is located on. Please note that shared modules cannot be moved to other pages." ResourceKey="Page">Page: </Label>
                             <div class="col-sm-9">
-                                <select id="page" class="form-select" @bind="@_pageId" required>
-                                    @if (PageState.Page.UserId != null)
-                                    {
+                                @if (PageState.Page.UserId != null || _isShared)
+                                {
+                                    <select id="page" class="form-select" @bind="@_pageId" required disabled>
                                         <option value="@PageState.Page.PageId">@(PageState.Page.Name)</option>
-                                    }
-                                    else
+                                    </select>                                    
+                                }
+                                else
+                                {
+                                    <select id="page" class="form-select" @bind="@_pageId" required>
+                                    @if (_pages != null)
                                     {
-                                        if (_pages != null)
+                                        foreach (Page p in _pages)
                                         {
-                                            foreach (Page p in _pages)
+                                            if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, p.PermissionList))
                                             {
-                                                if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, p.PermissionList))
-                                                {
-                                                    <option value="@p.PageId">@(new string('-', p.Level * 2))@(p.Name)</option>
-                                                }
+                                                <option value="@p.PageId">@(new string('-', p.Level * 2))@(p.Name)</option>
                                             }
                                         }
                                     }
-                                </select>
+                                    </select>
+                                }
                             </div>
                         </div>
                     </div>
@@ -161,6 +163,7 @@
     private string _pane;
     private string _containerType;
     private string _allPages = "false";
+    private bool _isShared = false;
     private string _header = "";
     private string _footer = "";
     private string _permissionNames = "";
@@ -207,6 +210,7 @@
         _expirydate = Utilities.UtcAsLocalDate(pagemodule.ExpiryDate);
 
         _allPages = pagemodule.Module.AllPages.ToString();
+        _isShared = pagemodule.Module.IsShared;
         createdby = pagemodule.Module.CreatedBy;
         createdon = pagemodule.Module.CreatedOn;
         modifiedby = pagemodule.Module.ModifiedBy;
diff --git a/Oqtane.Client/Modules/Admin/Site/Index.razor b/Oqtane.Client/Modules/Admin/Site/Index.razor
index 49a3273e..9b94e0c0 100644
--- a/Oqtane.Client/Modules/Admin/Site/Index.razor
+++ b/Oqtane.Client/Modules/Admin/Site/Index.razor
@@ -526,7 +526,7 @@
                                 </select>
                             </div>
                         </div>
-                        @if (_primary == "False" && (_groupType == SiteGroupTypes.Synchronization || _groupType == SiteGroupTypes.ChangeDetection))
+                        @if (_primary == "False" && !string.IsNullOrEmpty(_synchronized) && (_groupType == SiteGroupTypes.Synchronization || _groupType == SiteGroupTypes.ChangeDetection))
                         {
                             <div class="row mb-1 align-items-center">
                                 <Label Class="col-sm-3" For="synchronized" HelpText="The date/time when the site was last synchronized" ResourceKey="Synchronized">Synchronized: </Label>
diff --git a/Oqtane.Client/Resources/Modules/Admin/Modules/Settings.resx b/Oqtane.Client/Resources/Modules/Admin/Modules/Settings.resx
index 4f8f895c..0cf90297 100644
--- a/Oqtane.Client/Resources/Modules/Admin/Modules/Settings.resx
+++ b/Oqtane.Client/Resources/Modules/Admin/Modules/Settings.resx
@@ -130,7 +130,7 @@
     <value>Indicate if this module should be displayed on all pages</value>
   </data>
   <data name="Page.HelpText" xml:space="preserve">
-    <value>The page that the module is located on</value>
+    <value>The page that the module is located on. Please note that shared modules cannot be moved to other pages.</value>
   </data>
   <data name="Title.Text" xml:space="preserve">
     <value>Title: </value>
diff --git a/Oqtane.Server/Infrastructure/Jobs/SynchronizationJob.cs b/Oqtane.Server/Infrastructure/Jobs/SynchronizationJob.cs
index 2b574833..24e3ed19 100644
--- a/Oqtane.Server/Infrastructure/Jobs/SynchronizationJob.cs
+++ b/Oqtane.Server/Infrastructure/Jobs/SynchronizationJob.cs
@@ -617,6 +617,7 @@ namespace Oqtane.Infrastructure
         private string SynchronizeModules(IServiceProvider provider, ISettingRepository settingRepository, IPageModuleRepository pageModuleRepository, IModuleRepository moduleRepository, SiteGroupMember siteGroupMember, List<PageModule> primaryPageModules, List<PageModule> secondaryPageModules, Page primaryPage, Page secondaryPage, int secondarySiteId)
         {
             var log = "";
+            var removePageModules = secondaryPageModules.Where(item => item.PageId == secondaryPage.PageId).ToList();
 
             // iterate through primary modules on primary page
             foreach (var primaryPageModule in primaryPageModules.Where(item => item.PageId == primaryPage.PageId))
@@ -651,7 +652,7 @@ namespace Oqtane.Infrastructure
 
                         if (pageModule == null)
                         {
-                            // check if module exists
+                            // check if module exists in site (ie. a shared instance)
                             var module = secondaryPageModules.FirstOrDefault(item => item.Module.ModuleDefinitionName == primaryPageModule.Module.ModuleDefinitionName && item.Title.ToLower() == primaryPageModule.Title.ToLower())?.Module;
                             if (module == null)
                             {
@@ -685,7 +686,7 @@ namespace Oqtane.Infrastructure
 
                     if (pageModule != null)
                     {
-                        secondaryPageModules.Remove(pageModule);
+                        removePageModules.Remove(pageModule);
                     }
 
                     // module settings
@@ -716,7 +717,7 @@ namespace Oqtane.Infrastructure
             if (siteGroupMember.SiteGroup.Type == SiteGroupTypes.Synchronization)
             {
                 // remove modules on the secondary page which do not exist on the primary page
-                foreach (var secondaryPageModule in secondaryPageModules.Where(item => item.PageId == secondaryPage.PageId))
+                foreach (var secondaryPageModule in removePageModules)
                 {
                     pageModuleRepository.DeletePageModule(secondaryPageModule.PageModuleId);
                     log += Log(siteGroupMember, $"Module Instance Deleted: {secondaryPageModule.Title} - {CreateLink(siteGroupMember.AliasName + "/" + secondaryPageModule.Page.Path)}");
diff --git a/Oqtane.Server/Repository/PageModuleRepository.cs b/Oqtane.Server/Repository/PageModuleRepository.cs
index 239a9a67..8913f7fc 100644
--- a/Oqtane.Server/Repository/PageModuleRepository.cs
+++ b/Oqtane.Server/Repository/PageModuleRepository.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Security.Policy;
 using Microsoft.EntityFrameworkCore;
 using Oqtane.Models;
 using Oqtane.Shared;
@@ -98,6 +99,7 @@ namespace Oqtane.Repository
                 var permissions = _permissions.GetPermissions(pagemodule.Module.SiteId, EntityNames.Module).ToList();
                 pagemodule = GetPageModule(pagemodule, moduledefinitions, permissions);
             }
+            pagemodule.Module.IsShared = db.PageModule.Count(item => item.ModuleId == pagemodule.ModuleId) > 1;
             return pagemodule;
         }
 
diff --git a/Oqtane.Shared/Models/Module.cs b/Oqtane.Shared/Models/Module.cs
index 7775fcf5..1c2a23cb 100644
--- a/Oqtane.Shared/Models/Module.cs
+++ b/Oqtane.Shared/Models/Module.cs
@@ -33,6 +33,11 @@ namespace Oqtane.Models
         /// </summary>
         public bool AllPages { get; set; }
 
+        /// <summary>
+        /// indicates if the module is shared across multiple pages (only set in specific scenarios to ensure performance)
+        /// </summary>
+        [NotMapped]
+        public bool IsShared { get; set; }
 
         /// <summary>
         /// Reference to the <see cref="ModuleDefinition"/> used for this module.