diff --git a/src/lib/PnP.Framework/Graph/GroupsUtility.cs b/src/lib/PnP.Framework/Graph/GroupsUtility.cs
index 354f67f1f..a6588c865 100644
--- a/src/lib/PnP.Framework/Graph/GroupsUtility.cs
+++ b/src/lib/PnP.Framework/Graph/GroupsUtility.cs
@@ -121,8 +121,9 @@ private static void UpdateMembers(string[] members, string groupId, bool removeO
                     try
                     {
                         // And if any, add it to the collection of group's members
-                        var memberUrl = $"{groupRequestUrl}/members/{user.Id}/ref";
-                        HttpHelper.MakePostRequest(memberUrl, accessToken, retryCount: retryCount, delay: delay);
+                        var memberUrl = $"{groupRequestUrl}/members/$ref";
+                        object content = new JObject { ["@odata.id"] = $"{userRequestUrl}/{user.Id}" };
+                        HttpHelper.MakePostRequest(memberUrl, content, HttpHelper.JsonContentType, accessToken, retryCount: retryCount, delay: delay);
                     }
                     catch (Exception ex) when (ex.Message.Contains("Request_BadRequest") &&
                             ex.Message.Contains("added object references already exist"))
@@ -150,7 +151,7 @@ private static void UpdateMembers(string[] members, string groupId, bool removeO
                     try
                     {
                         // If it is not in the list of current members, just remove it
-                        var memberUrl = $"{groupRequestUrl}/members/{member.Id}/ref";
+                        var memberUrl = $"{groupRequestUrl}/members/{member.Id}/$ref";
                         HttpHelper.MakeDeleteRequest(memberUrl, accessToken, retryCount: retryCount, delay: delay);
                     }
                     catch (HttpResponseException ex) when (ex.StatusCode == 400)
@@ -187,8 +188,9 @@ private static void UpdateOwners(string[] owners, string groupId, bool removeOth
                     try
                     {
                         // And if any, add it to the collection of group's owners
-                        var memberUrl = $"{groupRequestUrl}/owners/{user.Id}/ref";
-                        HttpHelper.MakePostRequest(memberUrl, accessToken, retryCount: retryCount, delay: delay);
+                        var memberUrl = $"{groupRequestUrl}/owners/$ref";
+                        object content = new JObject { ["@odata.id"] = $"{userRequestUrl}/{user.Id}" };
+                        HttpHelper.MakePostRequest(memberUrl, content, HttpHelper.JsonContentType, accessToken, retryCount: retryCount, delay: delay);
                     }
                     catch (Exception ex) when (ex.Message.Contains("Request_BadRequest") &&
                             ex.Message.Contains("added object references already exist"))
@@ -216,7 +218,7 @@ private static void UpdateOwners(string[] owners, string groupId, bool removeOth
                     try
                     {
                         // If it is not in the list of current owners, just remove it
-                        var memberUrl = $"{groupRequestUrl}/owners/{owner.Id}/ref";
+                        var memberUrl = $"{groupRequestUrl}/owners/{owner.Id}/$ref";
                         HttpHelper.MakeDeleteRequest(memberUrl, accessToken, retryCount: retryCount, delay: delay);
                     }
                     catch (HttpResponseException ex) when (ex.StatusCode == 400)
@@ -641,7 +643,7 @@ public static void RemoveGroupMembers(string groupId, string[] members, string a
                         try
                         {
                             // If it is not in the list of current members, just remove it
-                            var deleteGroupMemberUrl = $"{groupRequestUrl}/members/{userId}/ref";
+                            var deleteGroupMemberUrl = $"{groupRequestUrl}/members/{userId}/$ref";
                             HttpHelper.MakeDeleteRequest(deleteGroupMemberUrl, accessToken, retryCount: retryCount, delay: delay);
                         }
                         catch (HttpResponseException ex) when (ex.StatusCode == 400)
@@ -694,7 +696,7 @@ public static void RemoveGroupOwners(string groupId, string[] owners, string acc
                         try
                         {
                             // If it is not in the list of current owners, just remove it
-                            var deleteGroupMemberUrl = $"{groupRequestUrl}/owners/{userId}/ref";
+                            var deleteGroupMemberUrl = $"{groupRequestUrl}/owners/{userId}/$ref";
                             HttpHelper.MakeDeleteRequest(deleteGroupMemberUrl, accessToken, retryCount: retryCount, delay: delay);
                         }
                         catch (HttpResponseException ex) when (ex.StatusCode == 400)
diff --git a/src/lib/PnP.Framework/Graph/UnifiedGroupsUtility.cs b/src/lib/PnP.Framework/Graph/UnifiedGroupsUtility.cs
index ea3fb453e..ad5353510 100644
--- a/src/lib/PnP.Framework/Graph/UnifiedGroupsUtility.cs
+++ b/src/lib/PnP.Framework/Graph/UnifiedGroupsUtility.cs
@@ -324,8 +324,9 @@ private static void UpdateMembers(string[] members, string groupId, bool removeO
                     try
                     {
                         // And if any, add it to the collection of group's members
-                        var memberUrl = $"{groupRequestUrl}/members/{user.Id}/ref";
-                        HttpHelper.MakePostRequest(memberUrl, accessToken, retryCount: retryCount, delay: delay);
+                        var memberUrl = $"{groupRequestUrl}/members/$ref";
+                        object content = new JObject { ["@odata.id"] = $"{userRequestUrl}/{user.Id}" };
+                        HttpHelper.MakePostRequest(memberUrl, content, HttpHelper.JsonContentType, accessToken, retryCount: retryCount, delay: delay);
                     }
                     catch (Exception ex) when (ex.Message.Contains("Request_BadRequest") &&
                             ex.Message.Contains("added object references already exist"))
@@ -353,7 +354,7 @@ private static void UpdateMembers(string[] members, string groupId, bool removeO
                     try
                     {
                         // If it is not in the list of current members, just remove it
-                        var memberUrl = $"{groupRequestUrl}/members/{member.Id}/ref";
+                        var memberUrl = $"{groupRequestUrl}/members/{member.Id}/$ref";
                         HttpHelper.MakeDeleteRequest(memberUrl, accessToken, retryCount: retryCount, delay: delay);
                     }
                     catch (HttpResponseException ex) when (ex.StatusCode == 400)
@@ -390,8 +391,9 @@ private static void UpdateOwners(string[] owners, string groupId, bool removeOth
                     try
                     {
                         // And if any, add it to the collection of group's owners
-                        var memberUrl = $"{groupRequestUrl}/owners/{user.Id}/ref";
-                        HttpHelper.MakePostRequest(memberUrl, accessToken, retryCount: retryCount, delay: delay);
+                        var memberUrl = $"{groupRequestUrl}/owners/$ref";
+                        object content = new JObject { ["@odata.id"] = $"{userRequestUrl}/{user.Id}" };
+                        HttpHelper.MakePostRequest(memberUrl, content, HttpHelper.JsonContentType, accessToken, retryCount: retryCount, delay: delay);
                     }
                     catch (Exception ex) when (ex.Message.Contains("Request_BadRequest") &&
                             ex.Message.Contains("added object references already exist"))
@@ -419,7 +421,7 @@ private static void UpdateOwners(string[] owners, string groupId, bool removeOth
                     try
                     {
                         // If it is not in the list of current owners, just remove it
-                        var memberUrl = $"{groupRequestUrl}/owners/{owner.Id}/ref";
+                        var memberUrl = $"{groupRequestUrl}/owners/{owner.Id}/$ref";
                         HttpHelper.MakeDeleteRequest(memberUrl, accessToken, retryCount: retryCount, delay: delay);
                     }
                     catch (HttpResponseException ex) when (ex.StatusCode == 400)
@@ -1160,7 +1162,7 @@ public static void RemoveUnifiedGroupMembers(string groupId, string[] members, s
                         try
                         {
                             // If it is not in the list of current members, just remove it
-                            var deleteGroupMemberUrl = $"{groupRequestUrl}/members/{userId}/ref";
+                            var deleteGroupMemberUrl = $"{groupRequestUrl}/members/{userId}/$ref";
                             HttpHelper.MakeDeleteRequest(deleteGroupMemberUrl, accessToken, retryCount: retryCount, delay: delay);
                         }
                         catch (HttpResponseException ex) when (ex.StatusCode == 400)
@@ -1213,7 +1215,7 @@ public static void RemoveUnifiedGroupOwners(string groupId, string[] owners, str
                         try
                         {
                             // If it is not in the list of current owners, just remove it
-                            var deleteGroupMemberUrl = $"{groupRequestUrl}/owners/{userId}/ref";
+                            var deleteGroupMemberUrl = $"{groupRequestUrl}/owners/{userId}/$ref";
                             HttpHelper.MakeDeleteRequest(deleteGroupMemberUrl, accessToken, retryCount: retryCount, delay: delay);
                         }
                         catch (HttpResponseException ex) when (ex.StatusCode == 400)