diff --git a/lib/reducers/keyserver-reducer.js b/lib/reducers/keyserver-reducer.js
--- a/lib/reducers/keyserver-reducer.js
+++ b/lib/reducers/keyserver-reducer.js
@@ -4,16 +4,20 @@
 import { reduceDeviceToken } from './device-token-reducer.js';
 import reduceLastCommunicatedPlatformDetails from './last-communicated-platform-details-reducer.js';
 import reduceUpdatesCurrentAsOf from './updates-reducer.js';
+import { addKeyserverActionType } from '../actions/keyserver-actions.js';
 import { siweAuthActionTypes } from '../actions/siwe-actions.js';
 import {
   logInActionTypes,
   resetUserStateActionType,
+  logOutActionTypes,
+  deleteAccountActionTypes,
 } from '../actions/user-actions.js';
 import type { KeyserverStore } from '../types/keyserver-types';
 import type { BaseAction } from '../types/redux-types.js';
 import {
   fullStateSyncActionType,
   incrementalStateSyncActionType,
+  defaultConnectionInfo,
 } from '../types/socket-types.js';
 import { processUpdatesActionType } from '../types/update-types.js';
 import { setNewSessionActionType } from '../utils/action-utils.js';
@@ -24,8 +28,36 @@
   state: KeyserverStore,
   action: BaseAction,
 ): KeyserverStore {
-  // this action is only dispatched on native
-  if (action.type === resetUserStateActionType) {
+  if (
+    action.type === logOutActionTypes.success ||
+    action.type === deleteAccountActionTypes.success ||
+    (action.type === setNewSessionActionType &&
+      action.payload.sessionChange.cookieInvalidated)
+  ) {
+    return {
+      keyserverInfos: {
+        [ashoatKeyserverID]: {
+          cookie: null,
+          updatesCurrentAsOf: 0,
+          urlPrefix: state.keyserverInfos[ashoatKeyserverID].urlPrefix,
+          connection: defaultConnectionInfo,
+          lastCommunicatedPlatformDetails: null,
+          deviceToken: null,
+        },
+      },
+    };
+  } else if (action.type === addKeyserverActionType) {
+    return {
+      ...state,
+      keyserverInfos: {
+        ...state.keyserverInfos,
+        [action.payload.keyserverAdminUserID]: {
+          ...action.payload.newKeyserverInfo,
+        },
+      },
+    };
+  } else if (action.type === resetUserStateActionType) {
+    // this action is only dispatched on native
     const stateCookie = state.keyserverInfos[ashoatKeyserverID]?.cookie;
     const cookie =
       stateCookie && stateCookie.startsWith('anonymous=') ? stateCookie : null;