diff --git a/src/Core/Models/SyncConfiguration.cs b/src/Core/Models/SyncConfiguration.cs
index 97e90655..9096c280 100644
--- a/src/Core/Models/SyncConfiguration.cs
+++ b/src/Core/Models/SyncConfiguration.cs
@@ -18,7 +18,6 @@ namespace Bit.Core.Models
             switch(type)
             {
                 case DirectoryType.ActiveDirectory:
-                    MemberAttribute = "memberOf";
                     CreationDateAttribute = "whenCreated";
                     RevisionDateAttribute = "whenChanged";
                     UserEmailPrefixAttribute = "sAMAccountName";
@@ -33,7 +32,7 @@ namespace Bit.Core.Models
                     UserEmailSuffix = null;
                     break;
                 case DirectoryType.Other:
-                    IntervalMinutes = 30;
+                    IntervalMinutes = 60;
                     break;
                 default:
                     break;
diff --git a/src/Core/Services/LdapDirectoryService.cs b/src/Core/Services/LdapDirectoryService.cs
index 486fcf60..07178077 100644
--- a/src/Core/Services/LdapDirectoryService.cs
+++ b/src/Core/Services/LdapDirectoryService.cs
@@ -5,6 +5,7 @@ using System;
 using System.Collections.Generic;
 using System.DirectoryServices;
 using System.Linq;
+using System.Net;
 using System.Threading.Tasks;
 
 namespace Bit.Core.Services
@@ -104,7 +105,7 @@ namespace Bit.Core.Services
             var initialSearchGroupIds = new List<string>();
             foreach(SearchResult item in result)
             {
-                initialSearchGroupIds.Add(new Uri(item.Path).Segments?.LastOrDefault());
+                initialSearchGroupIds.Add(DNFromPath(item.Path));
             }
 
             if(searchSinceRevision && !initialSearchGroupIds.Any())
@@ -144,7 +145,7 @@ namespace Bit.Core.Services
             var dict = new Dictionary<string, string>();
             foreach(SearchResult item in result)
             {
-                var referenceId = new Uri(item.Path).Segments?.LastOrDefault();
+                var referenceId = DNFromPath(item.Path);
                 var externalId = referenceId;
 
                 if(item.Properties.Contains("objectGUID") && item.Properties["objectGUID"].Count > 0)
@@ -161,7 +162,7 @@ namespace Bit.Core.Services
         {
             var group = new GroupEntry
             {
-                ReferenceId = new Uri(item.Path).Segments?.LastOrDefault()
+                ReferenceId = DNFromPath(item.Path)
             };
 
             if(group.ReferenceId == null)
@@ -297,7 +298,7 @@ namespace Bit.Core.Services
         {
             var user = new UserEntry
             {
-                ReferenceId = new Uri(item.Path).Segments?.LastOrDefault(),
+                ReferenceId = DNFromPath(item.Path),
                 Deleted = deleted
             };
 
@@ -362,5 +363,16 @@ namespace Bit.Core.Services
 
             return (control & UserAccountControl.AccountDisabled) == UserAccountControl.AccountDisabled;
         }
+
+        private static string DNFromPath(string path)
+        {
+            var dn = new Uri(path).Segments?.LastOrDefault();
+            if(dn == null)
+            {
+                return null;
+            }
+
+            return WebUtility.UrlDecode(dn);
+        }
     }
 }
diff --git a/src/Service/Service.cs b/src/Service/Service.cs
index 6cc0804d..2d42244b 100644
--- a/src/Service/Service.cs
+++ b/src/Service/Service.cs
@@ -76,9 +76,9 @@ namespace Service
             }
 
             var intervalMinutes = SettingsService.Instance.Sync.IntervalMinutes;
-            if(SettingsService.Instance.Server.Type == Bit.Core.Enums.DirectoryType.Other && intervalMinutes < 30)
+            if(SettingsService.Instance.Server.Type == Bit.Core.Enums.DirectoryType.Other && intervalMinutes < 60)
             {
-                intervalMinutes = 30;
+                intervalMinutes = 60;
             }
             else if(intervalMinutes < 1)
             {