diff --git a/src/Console/Program.cs b/src/Console/Program.cs
index 332445e8..90c8af5f 100644
--- a/src/Console/Program.cs
+++ b/src/Console/Program.cs
@@ -673,7 +673,7 @@ namespace Bit.Console
                     Con.WriteLine("Groups:");
                     foreach(var group in result.Groups)
                     {
-                        Con.WriteLine("  {0} - {1}", group.Name, group.Id);
+                        Con.WriteLine("  {0} - {1}", group.Name, group.ExternalId);
                         foreach(var user in group.Users)
                         {
                             Con.WriteLine("    {0}", user);
@@ -684,7 +684,7 @@ namespace Bit.Console
                     Con.WriteLine("Users:");
                     foreach(var user in result.Users)
                     {
-                        Con.WriteLine("  {0}{1}", user.Email ?? user.Id, user.Disabled ? " (disabled)" : null);
+                        Con.WriteLine("  {0}{1}", user.Email ?? user.ExternalId, user.Disabled ? " (disabled)" : null);
                     }
                 }
                 else
diff --git a/src/Core/Models/Entry.cs b/src/Core/Models/Entry.cs
index bdcc5d3a..f5e5e030 100644
--- a/src/Core/Models/Entry.cs
+++ b/src/Core/Models/Entry.cs
@@ -8,7 +8,8 @@ namespace Bit.Core.Models
 {
     public abstract class Entry
     {
-        public string Id { get; set; }
+        public string ReferenceId { get; set; }
+        public string ExternalId { get; set; }
         public DateTime? CreationDate { get; set; }
         public DateTime? RevisionDate { get; set; }
     }
diff --git a/src/Core/Models/ImportRequest.cs b/src/Core/Models/ImportRequest.cs
index 18b3c626..9fac3595 100644
--- a/src/Core/Models/ImportRequest.cs
+++ b/src/Core/Models/ImportRequest.cs
@@ -19,7 +19,7 @@ namespace Bit.Core.Models
             public Group(GroupEntry entry)
             {
                 Name = entry.Name;
-                ExternalId = entry.Id;
+                ExternalId = entry.ExternalId;
                 Users = entry.Users;
             }
 
@@ -34,7 +34,7 @@ namespace Bit.Core.Models
             {
                 Email = entry.Email;
                 Disabled = entry.Disabled;
-                ExternalId = entry.Id;
+                ExternalId = entry.ExternalId;
             }
 
             public string ExternalId { get; set; }
diff --git a/src/Core/Services/AzureDirectoryService.cs b/src/Core/Services/AzureDirectoryService.cs
index 7f725859..f9592592 100644
--- a/src/Core/Services/AzureDirectoryService.cs
+++ b/src/Core/Services/AzureDirectoryService.cs
@@ -117,7 +117,8 @@ namespace Bit.Core.Services
                 {
                     var entry = new GroupEntry
                     {
-                        Id = group.Id,
+                        ReferenceId = group.Id,
+                        ExternalId = group.Id,
                         Name = group.DisplayName
                     };
 
@@ -204,7 +205,8 @@ namespace Bit.Core.Services
                 {
                     var entry = new UserEntry
                     {
-                        Id = user.Id,
+                        ReferenceId = user.Id,
+                        ExternalId = user.Id,
                         Email = user.Mail ?? user.UserPrincipalName,
                         Disabled = !user.AccountEnabled.GetValueOrDefault(true)
                     };
diff --git a/src/Core/Services/LdapDirectoryService.cs b/src/Core/Services/LdapDirectoryService.cs
index f7caa3cc..69294068 100644
--- a/src/Core/Services/LdapDirectoryService.cs
+++ b/src/Core/Services/LdapDirectoryService.cs
@@ -103,14 +103,24 @@ namespace Bit.Core.Services
             {
                 var group = new GroupEntry
                 {
-                    Id = new Uri(item.Path).Segments?.LastOrDefault()
+                    ReferenceId = new Uri(item.Path).Segments?.LastOrDefault()
                 };
 
-                if(group.Id == null)
+                if(group.ReferenceId == null)
                 {
                     continue;
                 }
 
+                // External Id
+                if(item.Properties.Contains("objectGUID") && item.Properties["objectGUID"].Count > 0)
+                {
+                    group.ExternalId = item.Properties["objectGUID"][0].ToString();
+                }
+                else
+                {
+                    group.ExternalId = group.ReferenceId;
+                }
+
                 // Name
                 if(item.Properties.Contains(SettingsService.Instance.Sync.GroupNameAttribute) &&
                     item.Properties[SettingsService.Instance.Sync.GroupNameAttribute].Count > 0)
@@ -193,14 +203,24 @@ namespace Bit.Core.Services
             {
                 var user = new UserEntry
                 {
-                    Id = new Uri(item.Path).Segments?.LastOrDefault()
+                    ReferenceId = new Uri(item.Path).Segments?.LastOrDefault()
                 };
 
-                if(user.Id == null)
+                if(user.ReferenceId == null)
                 {
                     continue;
                 }
 
+                // External Id
+                if(item.Properties.Contains("objectGUID") && item.Properties["objectGUID"].Count > 0)
+                {
+                    user.ExternalId = item.Properties["objectGUID"][0].ToString();
+                }
+                else
+                {
+                    user.ExternalId = user.ReferenceId;
+                }
+
                 user.Disabled = EntryDisabled(item);
 
                 // Email
diff --git a/src/Core/Utilities/Sync.cs b/src/Core/Utilities/Sync.cs
index 5e057f79..279d3e12 100644
--- a/src/Core/Utilities/Sync.cs
+++ b/src/Core/Utilities/Sync.cs
@@ -86,14 +86,14 @@ namespace Bit.Core.Utilities
         {
             foreach(var group in currentGroups)
             {
-                var groupsInThisGroup = allGroups.Where(g => group.Members.Contains(g.Id)).ToList();
-                var usersInThisGroup = allUsers.Where(u => group.Members.Contains(u.Id)).ToList();
+                var groupsInThisGroup = allGroups.Where(g => group.Members.Contains(g.ReferenceId)).ToList();
+                var usersInThisGroup = allUsers.Where(u => group.Members.Contains(u.ReferenceId)).ToList();
 
                 foreach(var user in usersInThisGroup)
                 {
-                    if(!group.Users.Contains(user.Id))
+                    if(!group.Users.Contains(user.ExternalId))
                     {
-                        group.Users.Add(user.Id);
+                        group.Users.Add(user.ExternalId);
                     }
                 }
 
@@ -101,9 +101,9 @@ namespace Bit.Core.Utilities
                 {
                     foreach(var user in currentGroupsUsers)
                     {
-                        if(!group.Users.Contains(user.Id))
+                        if(!group.Users.Contains(user.ExternalId))
                         {
-                            group.Users.Add(user.Id);
+                            group.Users.Add(user.ExternalId);
                         }
                     }