diff --git a/backend/fluksio/api/routes/cloud.py b/backend/fluksio/api/routes/cloud.py
index b8f1fb2..029e342 100644
--- a/backend/fluksio/api/routes/cloud.py
+++ b/backend/fluksio/api/routes/cloud.py
@@ -281,19 +281,31 @@ def forget_remote_user(portal_sub: str) -> None:
 @router.delete(
     "", dependencies=[Depends(get_current_active_superuser)], response_model=Message
 )
-def disconnect(request: Request) -> Message:
+def disconnect(request: Request, session: SessionDep) -> Message:
     """Sever the connection from this side.
 
     Unilateral and immediate: the config is the only reason portal tokens
     verify here, so deleting it ends remote access whatever the portal still
-    has on file.
+    has on file. The users the portal let in go with it. The account it was
+    enrolled as stays, and so does every superuser.
     """
     task = getattr(request.app.state, "cloud_task", None)
     if task is not None:
         task.cancel()
         request.app.state.cloud_task = None
     request.app.state.cloud_connector = None
+    config = cloud_config.load()
     cloud_config.delete()
+    owner = config.local_user_id if config is not None else None
+    for user in session.exec(
+        select(User).where(
+            col(User.portal_sub).is_not(None),
+            User.is_superuser == False,  # noqa: E712
+        )
+    ):
+        if str(user.id) != owner:
+            session.delete(user)
+    session.commit()
     return Message(message="Disconnected from the portal")
 
 
diff --git a/backend/tests/test_cloud.py b/backend/tests/test_cloud.py
index 095479e..fd5a9a5 100644
--- a/backend/tests/test_cloud.py
+++ b/backend/tests/test_cloud.py
@@ -93,6 +93,41 @@ def test_disconnecting_ends_remote_access(
         decode_token(portal_token(portal_key))
 
 
+def test_disconnecting_deletes_the_users_the_portal_let_in(
+    client: TestClient,
+    enrolled: User,
+    superuser_token_headers: dict[str, str],
+    db: Session,
+) -> None:
+    """Nothing reaches them once the portal is gone; the rest stay."""
+    member = User(email="member-dc@example.com", hashed_password="x", portal_sub="p-1")
+    boss = User(
+        email="boss-dc@example.com",
+        hashed_password="x",
+        portal_sub="p-2",
+        is_superuser=True,
+    )
+    plain = create_random_user(db)
+    db.add(member)
+    db.add(boss)
+    db.commit()
+    member_id, boss_id = member.id, boss.id
+
+    response = client.delete(
+        f"{settings.API_V1_STR}/cloud", headers=superuser_token_headers
+    )
+    assert response.status_code == 200, response.text
+    db.expire_all()
+    assert db.get(User, member_id) is None
+    assert db.get(User, boss_id) is not None
+    assert db.get(User, plain.id) is not None
+    assert db.get(User, enrolled.id) is not None
+    assert cloud_config.load() is None
+    db.delete(db.get(User, boss_id))
+    db.delete(db.get(User, plain.id))
+    db.commit()
+
+
 def test_status_reports_not_enrolled(
     client: TestClient, superuser_token_headers: dict[str, str]
 ) -> None:
diff --git a/docs/interface/portal.md b/docs/interface/portal.md
index ed6c540..fa26941 100644
--- a/docs/interface/portal.md
+++ b/docs/interface/portal.md
@@ -83,7 +83,8 @@ proxy on that route must support WebSockets.
   delete or deactivate their account under **Admin → Users**.
 - To end all portal access from the instance, press **Disconnect**. This stops
   the connection and invalidates portal credentials locally, without requiring
-  the portal to be online.
+  the portal to be online. It also deletes the users the portal let in; the
+  account that enrolled and every superuser stay.
 - To replace the pairing, use **Connect with a new code**. Remote users and
   panels may need to pair again.
 
diff --git a/frontend/src/client/sdk.gen.ts b/frontend/src/client/sdk.gen.ts
index 4c659a3..20e561b 100644
--- a/frontend/src/client/sdk.gen.ts
+++ b/frontend/src/client/sdk.gen.ts
@@ -469,7 +469,8 @@ export class CloudService {
      *
      * Unilateral and immediate: the config is the only reason portal tokens
      * verify here, so deleting it ends remote access whatever the portal still
-     * has on file.
+     * has on file. The users the portal let in go with it. The account it was
+     * enrolled as stays, and so does every superuser.
      * @returns Message Successful Response
      * @throws ApiError
      */
diff --git a/frontend/src/components/UserSettings/RemoteAccess.tsx b/frontend/src/components/UserSettings/RemoteAccess.tsx
index 994534a..c736ec7 100644
--- a/frontend/src/components/UserSettings/RemoteAccess.tsx
+++ b/frontend/src/components/UserSettings/RemoteAccess.tsx
@@ -104,6 +104,7 @@ export function RemoteAccess() {
       setConfirmDisconnect(false)
       showSuccessToast("Disconnected from the portal")
       invalidate()
+      queryClient.invalidateQueries({ queryKey: ["users"] })
     },
     onError: handleError.bind(showErrorToast),
   })
@@ -290,8 +291,9 @@ export function RemoteAccess() {
             <DialogTitle>Disconnect from the portal?</DialogTitle>
             <DialogDescription>
               Remote access ends immediately and the portal's credentials stop
-              working here. Nothing on this instance is changed or deleted, and
-              you can connect again with a new code.
+              working here. The users the portal let in are deleted. The account
+              it was connected as and every superuser stay, flows and data are
+              untouched, and you can connect again with a new code.
             </DialogDescription>
           </DialogHeader>
           <DialogFooter>