diff --git a/htagweb/appserver.py b/htagweb/appserver.py
index c7157c5..0ae7495 100644
--- a/htagweb/appserver.py
+++ b/htagweb/appserver.py
@@ -237,7 +237,7 @@ async def handleHome(request):
                 return await self.serve(request,obj)
             self.add_route( '/', handleHome )
 
-    async def serve(self, request, obj ) -> HTMLResponse:
+    async def serve(self, request, obj, force:bool=False ) -> HTMLResponse:
         uid = request.scope["uid"]
         fqn=normalize(findfqn(obj))
 
@@ -312,7 +312,7 @@ async def serve(self, request, obj ) -> HTMLResponse:
 
     """ % locals()
 
-        p = HrClient(uid,fqn,js,self.sesprovider.__name__)
+        p = HrClient(uid,fqn,js,self.sesprovider.__name__,force=force)
 
         args,kargs = commons.url2ak(str(request.url))
         html=await p.start(*args,**kargs)
diff --git a/htagweb/server/__init__.py b/htagweb/server/__init__.py
index 84ba67a..8ee2673 100644
--- a/htagweb/server/__init__.py
+++ b/htagweb/server/__init__.py
@@ -50,7 +50,7 @@ def importClassFromFqn(fqn_norm:str) -> type:
 
 
 
-def process(uid,hid,event_response,event_interact,fqn,js,init,sesprovidername):
+def process(uid,hid,event_response,event_interact,fqn,js,init,sesprovidername,force):
     #''''''''''''''''''''''''''''''''''''''''''''''''''''
     if sesprovidername is None:
         sesprovidername="MemDict"
@@ -107,6 +107,7 @@ async def update(actions):
                     if params.get("cmd") == CMD_RENDER:
                         # just a false start, just need the current render
                         print(f">Process {pid} render {hid}")
+                        hr.session = FactorySession(uid)    # reload session
                         assert await bus.publish(event_response,str(hr))
                     else:
                         print(f">Process {pid} interact {hid}:")
@@ -169,18 +170,20 @@ def killall(ps:dict):
                 if hid in ps and ps[hid]["process"].is_alive():
                     # process is already running
 
-                    if key_init == ps[hid]["key"]:
+                    if params["force"] or key_init != ps[hid]["key"]:
+                        # kill itself because it's not the same init params, or force recreate
+                        if params["force"]:
+                            print("Recreate a new process (forced)",hid)
+                        else:
+                            print("Recreate a new process (qp changed)",hid)
+                        ps[hid]["process"].kill()
+                        # and recreate another one later
+                    else:
                         # it's the same initialization process
 
                         # so ask process to send back its render
                         assert await bus.publish(params["event_interact"],dict(cmd=CMD_RENDER))
                         continue
-                    else:
-                        # kill itself because it's not the same init params
-                        print("Reload a new process",hid)
-                        ps[hid]["process"].kill()
-
-                        # and recreate another one later
 
                 # create the process
                 p=multiprocessing.Process(target=process, args=[],kwargs=params)
diff --git a/htagweb/server/client.py b/htagweb/server/client.py
index b7dff15..bec73df 100644
--- a/htagweb/server/client.py
+++ b/htagweb/server/client.py
@@ -15,13 +15,14 @@
 TIMEOUT=20 # sec to wait answer from redys server #TODO: set better
 
 class HrClient:
-    def __init__(self,uid:str,fqn:str,js:str=None,sesprovidername=None):
+    def __init__(self,uid:str,fqn:str,js:str=None,sesprovidername=None,force=False):
         """ !!!!!!!!!!!!!!!!!!!! if js|sesprovidername is None : can't do a start() !!!!!!!!!!!!!!!!!!!!!!"""
         self.uid=uid
         self.fqn=fqn
         self.js=js
         self.bus = redys.v2.AClient()
         self.sesprovidername=sesprovidername
+        self.force=force
 
         self.hid=f"{uid}_{fqn}"
         self.event_response = f"response_{self.hid}"
@@ -56,6 +57,7 @@ async def start(self,*a,**k) -> str:
             js=self.js,
             init= (a,k),
             sesprovidername=self.sesprovidername,
+            force=self.force,
         ))
 
         # wait 1st rendering
diff --git a/test_server.py b/test_server.py
index 648a52d..f30953f 100644
--- a/test_server.py
+++ b/test_server.py
@@ -30,6 +30,10 @@ async def test_base( server ):
     html=await p.start()
     assert html.startswith("<!DOCTYPE html><html>")
 
+    p=HrClient(uid,"test_hr:App","//",force=True)
+    html=await p.start()
+    assert html.startswith("<!DOCTYPE html><html>")
+
     actions=await p.interact( oid="ut", method_name="doit", args=[], kargs={}, event={} )
     assert "update" in actions