diff --git a/pyaedt/desktop.py b/pyaedt/desktop.py
index fc8215d2b21..6e80f292771 100644
--- a/pyaedt/desktop.py
+++ b/pyaedt/desktop.py
@@ -116,7 +116,7 @@ def launch_desktop_on_port():
     _aedt_process_thread.start()
     timeout = settings.desktop_launch_timeout
     k = 0
-    while not _check_grpc_port(port):
+    while not _is_port_occupied(port):
         if k > timeout:  # pragma: no cover
             active_s = active_sessions(student_version=student_version)
             for pid in active_s:
@@ -196,7 +196,7 @@ def launch_aedt_in_lsf(non_graphical, port):  # pragma: no cover
             aedt_startup_timeout = 120
             k = 0
             # LSF resources are assigned. Make sure AEDT starts
-            while not _check_grpc_port(port, machine_name=m.group(1)):
+            while not _is_port_occupied(port, machine_name=m.group(1)):
                 if k > aedt_startup_timeout:
                     pyaedt_logger.error("LSF allocated resources, but AEDT was unable to start due to a timeout.")
                     return False, err
@@ -208,7 +208,7 @@ def launch_aedt_in_lsf(non_graphical, port):  # pragma: no cover
     return False, err
 
 
-def _check_grpc_port(port, machine_name=""):
+def _is_port_occupied(port, machine_name=""):
     if not port:
         return False
     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
@@ -236,8 +236,9 @@ def _find():
 
     while True:
         new_port = _find()
-        if new_port not in list(active_sessions().values()):
+        if new_port not in list(active_sessions().values()) and new_port not in range(50051, 50070, 1):
             return new_port
+        time.sleep(0.1)
 
 
 def exception_to_desktop(ex_value, tb_data):  # pragma: no cover
@@ -1145,13 +1146,13 @@ def _init_grpc(self, non_graphical, new_aedt_session, version, student_version,
                     self.port = _find_free_port()
                     self.logger.info("New AEDT session is starting on gRPC port %s", self.port)
                     new_aedt_session = True
-        elif new_aedt_session and not _check_grpc_port(self.port, self.machine):
+        elif new_aedt_session and not _is_port_occupied(self.port, self.machine):
             self.logger.info("New AEDT session is starting on gRPC port %s", self.port)
         elif new_aedt_session:
             self.logger.warning("New Session of AEDT cannot be started on specified port because occupied.")
             self.port = _find_free_port()
             self.logger.info("New AEDT session is starting on gRPC port %s", self.port)
-        elif _check_grpc_port(self.port, self.machine):
+        elif _is_port_occupied(self.port, self.machine):
             self.logger.info("Connecting to AEDT session on gRPC port %s", self.port)
         else:
             self.logger.info("AEDT session is starting on gRPC port %s", self.port)
diff --git a/pyaedt/generic/grpc_plugin_dll_class.py b/pyaedt/generic/grpc_plugin_dll_class.py
index f51a259f886..789fc6c4792 100644
--- a/pyaedt/generic/grpc_plugin_dll_class.py
+++ b/pyaedt/generic/grpc_plugin_dll_class.py
@@ -332,7 +332,7 @@ def SetPyObjCalbacks(self):
         self.AedtAPI.SetPyObjCalbacks(self.callbackToCreateObj, self.callbackCreateBlock, self.callbackGetObjID)
 
     @staticmethod
-    def _check_grpc_port(port, machine_name=""):
+    def _is_port_occupied(port, machine_name=""):
         s = socket.socket()
         try:
             if not machine_name:
@@ -350,7 +350,7 @@ def CreateAedtApplication(self, machine="", port=0, NGmode=False, alwaysNew=True
         try:
             self.aedt = self.AedtAPI.CreateAedtApplication(machine, port, NGmode, alwaysNew)
         except Exception:  # pragma: no cover
-            if port and self._check_grpc_port(port):
+            if port and self._is_port_occupied(port):
                 time.sleep(5)  # waiting for Desktop to initialize Grpc Server
                 self.aedt = self.AedtAPI.CreateAedtApplication(machine, port, NGmode, alwaysNew)
             if not self.aedt: