diff --git a/backend/app/services/rdg_display.py b/backend/app/services/rdg_display.py
index f00eb86..76bd568 100644
--- a/backend/app/services/rdg_display.py
+++ b/backend/app/services/rdg_display.py
@@ -9,7 +9,7 @@ from sqlalchemy.orm import Session
 from app.config import get_settings
 from app.models import Event
 from app.services.rdg_client_host import find_windows_host_by_ipv4
-from app.services.rdg_session_flap import event_internal_ip
+from app.services.rdg_session_flap import event_internal_ip, resolve_rdg_qwinsta_enabled
 
 RDG_TYPES = frozenset(
     {
@@ -115,7 +115,7 @@ def build_rdg_display(event: Event, db: Session | None = None) -> RdgDisplayInfo
         summary_parts.append(win_note)
     summary = " · ".join(summary_parts)
 
-    qwinsta_enabled = bool(internal_ip)
+    qwinsta_enabled = resolve_rdg_qwinsta_enabled(db, event)
 
     return RdgDisplayInfo(
         title=title,
@@ -126,7 +126,7 @@ def build_rdg_display(event: Event, db: Session | None = None) -> RdgDisplayInfo
     )
 
 
-def event_supports_rdg_client_qwinsta(event: Event) -> bool:
-    if event.type not in RDG_TYPES:
-        return False
-    return bool(event_internal_ip(event))
+def event_supports_rdg_client_qwinsta(event: Event, db: Session | None = None) -> bool:
+    from app.services.rdg_session_flap import resolve_rdg_qwinsta_enabled
+
+    return resolve_rdg_qwinsta_enabled(db, event)
diff --git a/backend/app/services/rdg_session_flap.py b/backend/app/services/rdg_session_flap.py
index d6c195e..892d5c3 100644
--- a/backend/app/services/rdg_session_flap.py
+++ b/backend/app/services/rdg_session_flap.py
@@ -172,25 +172,73 @@ def find_rdg_end_after_success(db: Session, success_event: Event) -> Event | Non
     return None
 
 
+def find_normal_rdg_end_after_success(db: Session, success_event: Event) -> Event | None:
+    """303 после 302 с паузой больше flap-окна — штатное завершение сессии."""
+    if success_event.type != RDG_SUCCESS_TYPE:
+        return None
+    settings = get_settings()
+    max_sec = settings.sac_rdg_flap_window_max_sec
+    start_at = _as_utc(success_event.occurred_at)
+    after_flap = start_at + timedelta(seconds=max_sec)
+
+    candidates = db.scalars(
+        select(Event)
+        .where(
+            Event.host_id == success_event.host_id,
+            Event.type.in_(RDG_END_TYPES),
+            Event.occurred_at > after_flap,
+            Event.id != success_event.id,
+        )
+        .order_by(Event.occurred_at.asc())
+    ).all()
+
+    for end in candidates:
+        if not _users_match(end, success_event):
+            continue
+        if not _internal_ips_compatible(end, success_event):
+            continue
+        return end
+    return None
+
+
+def resolve_rdg_qwinsta_enabled(db: Session | None, event: Event) -> bool:
+    """Кнопка qwinsta/logoff только на 302, пока сессия может быть активна (или RDG flap)."""
+    if event.type in RDG_END_TYPES:
+        return False
+    if event.type != RDG_SUCCESS_TYPE:
+        return False
+    if not _event_internal_ip(event):
+        return False
+    if db is None:
+        return True
+    if find_rdg_end_after_success(db, event) is not None:
+        return True
+    if find_normal_rdg_end_after_success(db, event) is not None:
+        return False
+    return True
+
+
 def resolve_rdg_flap_summary(
     db: Session, event: Event
 ) -> tuple[bool, int | None, int | None]:
     """
     (rdg_flap, pair_event_id, qwinsta_event_id).
-    qwinsta_event_id — всегда 303; для 302 указывает на связанный end-event.
+    qwinsta_event_id — id события 302 для qwinsta (на 303 кнопку не показываем).
     """
     if event_has_rdg_flap(event):
         pair_id = _stored_flap_pair_id(event)
-        return True, pair_id, event.id
+        if event.type == RDG_SUCCESS_TYPE:
+            return True, pair_id, event.id
+        return True, pair_id, pair_id
 
     if event.type in RDG_END_TYPES:
         prior = find_rdg_success_before_end(db, event)
         if prior is not None:
-            return True, prior.id, event.id
+            return True, prior.id, prior.id
 
     if event.type == RDG_SUCCESS_TYPE:
         end = find_rdg_end_after_success(db, event)
         if end is not None:
-            return True, end.id, end.id
+            return True, end.id, event.id
 
     return False, None, None
diff --git a/backend/app/services/rdg_winrm_actions.py b/backend/app/services/rdg_winrm_actions.py
index 137d0d8..048d28f 100644
--- a/backend/app/services/rdg_winrm_actions.py
+++ b/backend/app/services/rdg_winrm_actions.py
@@ -31,8 +31,8 @@ def _require_win_admin(db: Session):
     return cfg
 
 
-def _require_rdg_client_qwinsta(event: Event) -> None:
-    if event_supports_rdg_client_qwinsta(event):
+def _require_rdg_client_qwinsta(db: Session, event: Event) -> None:
+    if event_supports_rdg_client_qwinsta(event, db):
         return
     raise HTTPException(
         status_code=400,
@@ -92,7 +92,7 @@ def _persist_command(
 
 
 def execute_qwinsta_via_winrm(db: Session, event: Event, *, requested_by: str) -> AgentCommand:
-    _require_rdg_client_qwinsta(event)
+    _require_rdg_client_qwinsta(db, event)
     cfg = _require_win_admin(db)
     client_host = _resolve_client(db, event)
 
@@ -135,7 +135,7 @@ def execute_logoff_via_winrm(
     session_id: int,
     requested_by: str,
 ) -> AgentCommand:
-    _require_rdg_client_qwinsta(event)
+    _require_rdg_client_qwinsta(db, event)
     cfg = _require_win_admin(db)
     client_host = _resolve_client(db, event)
 
diff --git a/backend/app/version.py b/backend/app/version.py
index 517d4de..2168010 100644
--- a/backend/app/version.py
+++ b/backend/app/version.py
@@ -1,5 +1,5 @@
 """Единый источник версии SAC (API, health, логи, OpenAPI)."""
 
 APP_NAME = "Security Alert Center"
-APP_VERSION = "0.3.3"
+APP_VERSION = "0.3.4"
 APP_VERSION_LABEL = f"{APP_NAME} v.{APP_VERSION}"
diff --git a/backend/tests/test_health.py b/backend/tests/test_health.py
index cf96900..96d72b9 100644
--- a/backend/tests/test_health.py
+++ b/backend/tests/test_health.py
@@ -4,6 +4,6 @@ from app.version import APP_NAME, APP_VERSION, APP_VERSION_LABEL
 
 
 def test_version_constants():
-    assert APP_VERSION == "0.3.3"
+    assert APP_VERSION == "0.3.4"
     assert APP_NAME == "Security Alert Center"
-    assert APP_VERSION_LABEL == "Security Alert Center v.0.3.3"
+    assert APP_VERSION_LABEL == "Security Alert Center v.0.3.4"
diff --git a/backend/tests/test_rdg_display.py b/backend/tests/test_rdg_display.py
index 5d13fc7..42a3beb 100644
--- a/backend/tests/test_rdg_display.py
+++ b/backend/tests/test_rdg_display.py
@@ -111,7 +111,15 @@ def test_event_supports_rdg_client_qwinsta_without_flap(db_session):
     db_session.add(gw)
     db_session.commit()
     event = _rdg_event(db_session, gw=gw)
-    assert event_supports_rdg_client_qwinsta(event) is True
+    assert event_supports_rdg_client_qwinsta(event, db_session) is True
+
+
+def test_event_supports_rdg_client_qwinsta_not_on_disconnect(db_session):
+    gw = Host(hostname="K6A-DC3", os_family="windows", product="rdp-login-monitor", ipv4="192.168.160.40")
+    db_session.add(gw)
+    db_session.commit()
+    event = _rdg_event(db_session, gw=gw, event_type="rdg.connection.disconnected", win_id=303)
+    assert event_supports_rdg_client_qwinsta(event, db_session) is False
 
 
 @pytest.mark.parametrize(
@@ -125,4 +133,4 @@ def test_event_supports_rdg_client_qwinsta_requires_internal_ip(db_session, inte
     event = _rdg_event(db_session, gw=gw, internal_ip=internal_ip or "")
     if internal_ip is None:
         event.details = {k: v for k, v in event.details.items() if k != "internal_ip"}
-    assert event_supports_rdg_client_qwinsta(event) is False
+    assert event_supports_rdg_client_qwinsta(event, db_session) is False
diff --git a/backend/tests/test_rdg_session_flap.py b/backend/tests/test_rdg_session_flap.py
index 8b7b5cf..ea632ec 100644
--- a/backend/tests/test_rdg_session_flap.py
+++ b/backend/tests/test_rdg_session_flap.py
@@ -15,6 +15,7 @@ from app.services.rdg_session_flap import (
     event_has_rdg_flap,
     find_rdg_success_before_end,
     resolve_rdg_flap_summary,
+    resolve_rdg_qwinsta_enabled,
 )
 from app.services.event_summary import event_to_summary
 from tests.test_ingest import VALID_EVENT
@@ -193,14 +194,70 @@ def test_resolve_rdg_flap_summary_for_302_and_303(db_session, rdg_settings):
 
     assert end_flap is True
     assert end_pair == start.id
-    assert end_qwinsta == end.id
+    assert end_qwinsta == start.id
 
     assert start_flap is True
     assert start_pair == end.id
-    assert start_qwinsta == end.id
+    assert start_qwinsta == start.id
 
     end_summary = event_to_summary(end, db_session)
     start_summary = event_to_summary(start, db_session)
     assert end_summary.rdg_flap is True
     assert start_summary.rdg_flap is True
-    assert start_summary.rdg_flap_qwinsta_event_id == end.id
+    assert start_summary.rdg_flap_qwinsta_event_id == start.id
+    assert start_summary.rdg_qwinsta_enabled is True
+    assert end_summary.rdg_qwinsta_enabled is False
+
+
+def test_rdg_qwinsta_disabled_after_normal_session_end(db_session, rdg_settings):
+    t0 = datetime.now(timezone.utc)
+    user = "B26\\normal.user"
+    details = {"user": user, "internal_ip": "192.168.163.49"}
+
+    start = _ingest(
+        db_session,
+        t0,
+        type="rdg.connection.success",
+        category="auth",
+        severity="info",
+        title="302",
+        summary="302",
+        details=details,
+    )
+    end = _ingest(
+        db_session,
+        t0 + timedelta(minutes=20),
+        type="rdg.connection.disconnected",
+        category="auth",
+        severity="info",
+        title="303",
+        summary="303",
+        details=details,
+    )
+
+    assert resolve_rdg_qwinsta_enabled(db_session, start) is False
+    assert resolve_rdg_qwinsta_enabled(db_session, end) is False
+
+    start_summary = event_to_summary(start, db_session)
+    end_summary = event_to_summary(end, db_session)
+    assert start_summary.rdg_qwinsta_enabled is False
+    assert end_summary.rdg_qwinsta_enabled is False
+
+
+def test_rdg_qwinsta_enabled_while_session_open(db_session, rdg_settings):
+    t0 = datetime.now(timezone.utc)
+    details = {"user": r"B26\active.user", "internal_ip": "192.168.163.50"}
+
+    start = _ingest(
+        db_session,
+        t0,
+        type="rdg.connection.success",
+        category="auth",
+        severity="info",
+        title="302",
+        summary="302",
+        details=details,
+    )
+
+    assert resolve_rdg_qwinsta_enabled(db_session, start) is True
+    assert event_to_summary(start, db_session).rdg_qwinsta_enabled is True
diff --git a/backend/tests/test_rdg_winrm_actions.py b/backend/tests/test_rdg_winrm_actions.py
index d79d279..e274046 100644
--- a/backend/tests/test_rdg_winrm_actions.py
+++ b/backend/tests/test_rdg_winrm_actions.py
@@ -9,22 +9,21 @@ from app.models import Event, Host
 from app.services.winrm_connect import WinRmCmdResult
 
 
-def _flap_event(db_session, *, gw: Host, ws: Host) -> Event:
+def _rdg_success_event(db_session, *, gw: Host, ws: Host) -> Event:
     event = Event(
-        event_id="ev-flap-1",
+        event_id="ev-rdg-302",
         host_id=gw.id,
         occurred_at=datetime.now(timezone.utc),
         received_at=datetime.now(timezone.utc),
         category="auth",
-        type="rdg.connection.disconnected",
+        type="rdg.connection.success",
         severity="info",
-        title="RD Gateway event 303",
+        title="RD Gateway event 302",
         summary="",
         payload={},
         details={
             "user": r"B26\papatramp",
             "internal_ip": ws.ipv4,
-            "rdg_flap": True,
         },
     )
     db_session.add(event)
@@ -50,7 +49,7 @@ def test_qwinsta_via_winrm_on_client_host(jwt_headers, client, db_session, monke
     db_session.add_all([ws, gw])
     db_session.commit()
     ws_id = ws.id
-    event = _flap_event(db_session, gw=gw, ws=ws)
+    event = _rdg_success_event(db_session, gw=gw, ws=ws)
 
     qwinsta_out = " SESSIONNAME       USERNAME                 ID  STATE\r\n rdp-tcp#0         B26\\papatramp            2  Active\r\n"
 
@@ -96,12 +95,12 @@ def test_qwinsta_client_not_in_hosts(jwt_headers, client, db_session, monkeypatc
         occurred_at=datetime.now(timezone.utc),
         received_at=datetime.now(timezone.utc),
         category="auth",
-        type="rdg.connection.disconnected",
+        type="rdg.connection.success",
         severity="info",
-        title="303",
+        title="302",
         summary="",
         payload={},
-        details={"user": r"B26\user", "internal_ip": "192.168.160.999", "rdg_flap": True},
+        details={"user": r"B26\user", "internal_ip": "192.168.160.999"},
     )
     db_session.add(event)
     db_session.commit()
@@ -185,3 +184,40 @@ def test_qwinsta_rejects_rdg_without_internal_ip(jwt_headers, client, db_session
     response = client.post(f"/api/v1/events/{event.id}/actions/qwinsta", headers=jwt_headers)
     assert response.status_code == 400
     assert "internal_ip" in response.json()["detail"].lower()
+
+
+def test_qwinsta_rejects_rdg_303_disconnect(jwt_headers, client, db_session, monkeypatch):
+    monkeypatch.setenv("SAC_WIN_ADMIN_USER", r"B26\admin")
+    monkeypatch.setenv("SAC_WIN_ADMIN_PASSWORD", "pw")
+    from app.config import get_settings
+
+    get_settings.cache_clear()
+
+    ws = Host(
+        hostname="Andrisonova-PC",
+        os_family="windows",
+        product="rdp-login-monitor",
+        ipv4="192.168.160.113",
+    )
+    gw = Host(hostname="K6A-DC3", os_family="windows", product="rdp-login-monitor", ipv4="192.168.160.40")
+    db_session.add_all([ws, gw])
+    db_session.commit()
+
+    event = Event(
+        event_id="ev-rdg-303",
+        host_id=gw.id,
+        occurred_at=datetime.now(timezone.utc),
+        received_at=datetime.now(timezone.utc),
+        category="auth",
+        type="rdg.connection.disconnected",
+        severity="info",
+        title="303",
+        summary="",
+        payload={},
+        details={"user": r"B26\papatramp", "internal_ip": ws.ipv4},
+    )
+    db_session.add(event)
+    db_session.commit()
+
+    response = client.post(f"/api/v1/events/{event.id}/actions/qwinsta", headers=jwt_headers)
+    assert response.status_code == 400
diff --git a/frontend/src/utils/rdgFlap.ts b/frontend/src/utils/rdgFlap.ts
index 49eda75..29b2afe 100644
--- a/frontend/src/utils/rdgFlap.ts
+++ b/frontend/src/utils/rdgFlap.ts
@@ -13,10 +13,8 @@ export function rdgAccessPathLabel(event: EventSummary): string {
 }
 
 export function rdgQwinstaEventId(event: EventSummary): number | null {
-  if (event.rdg_flap_qwinsta_event_id) return event.rdg_flap_qwinsta_event_id;
-  if (event.rdg_qwinsta_enabled) return event.id;
-  if (event.rdg_flap) return event.id;
-  return null;
+  if (!event.rdg_qwinsta_enabled) return null;
+  return event.rdg_flap_qwinsta_event_id ?? event.id;
 }
 
 /** @deprecated use rdgQwinstaEventId */
diff --git a/frontend/src/version.ts b/frontend/src/version.ts
index eb271ce..9a6f563 100644
--- a/frontend/src/version.ts
+++ b/frontend/src/version.ts
@@ -1,4 +1,4 @@
 /** Fallback до загрузки /health; при релизе держите в sync с backend/app/version.py */
 export const APP_NAME = "Security Alert Center";
-export const APP_VERSION = "0.3.3";
+export const APP_VERSION = "0.3.4";
 export const APP_VERSION_LABEL = `${APP_NAME} v.${APP_VERSION}`;