diff --git a/lib/selectors/account-selectors.js b/lib/selectors/account-selectors.js
--- a/lib/selectors/account-selectors.js
+++ b/lib/selectors/account-selectors.js
@@ -50,7 +50,7 @@
 ) => (state: AppState) => PreRequestUserState = keyserverID =>
   createSelector(
     (state: AppState) => state.currentUserInfo,
-    cookieSelector,
+    cookieSelector(keyserverID),
     sessionIDSelector(keyserverID),
     (
       currentUserInfo: ?CurrentUserInfo,
diff --git a/lib/selectors/keyserver-selectors.js b/lib/selectors/keyserver-selectors.js
--- a/lib/selectors/keyserver-selectors.js
+++ b/lib/selectors/keyserver-selectors.js
@@ -12,10 +12,14 @@
 import type { AppState } from '../types/redux-types.js';
 import type { ConnectionInfo } from '../types/socket-types.js';
 import type { UserInfos } from '../types/user-types.js';
-import { ashoatKeyserverID } from '../utils/validation-utils.js';
 
-const cookieSelector: (state: AppState) => ?string = (state: AppState) =>
-  state.keyserverStore.keyserverInfos[ashoatKeyserverID]?.cookie;
+const baseCookieSelector: (
+  keyserverID: string,
+) => (state: AppState) => ?string = keyserverID => (state: AppState) =>
+  state.keyserverStore.keyserverInfos[keyserverID]?.cookie;
+
+const cookieSelector: (keyserverID: string) => (state: AppState) => ?string =
+  _memoize(baseCookieSelector);
 
 const cookiesSelector: (state: AppState) => {
   +[keyserverID: string]: string,
diff --git a/lib/selectors/server-calls.js b/lib/selectors/server-calls.js
--- a/lib/selectors/server-calls.js
+++ b/lib/selectors/server-calls.js
@@ -31,7 +31,7 @@
   keyserverID: string,
 ) => (state: AppState) => ServerCallState = keyserverID =>
   createSelector(
-    cookieSelector,
+    cookieSelector(keyserverID),
     urlPrefixSelector(keyserverID),
     sessionIDSelector(keyserverID),
     (state: AppState) => state.currentUserInfo,
diff --git a/lib/shared/session-utils.js b/lib/shared/session-utils.js
--- a/lib/shared/session-utils.js
+++ b/lib/shared/session-utils.js
@@ -36,7 +36,7 @@
     preRequestUserState &&
     (preRequestUserState.currentUserInfo?.id !== currentCurrentUserInfo.id ||
       preRequestUserState.cookiesAndSessions[ashoatKeyserverID].cookie !==
-        cookieSelector(currentReduxState) ||
+        cookieSelector(ashoatKeyserverID)(currentReduxState) ||
       preRequestUserState.cookiesAndSessions[ashoatKeyserverID].sessionID !==
         sessionIDSelector(ashoatKeyserverID)(currentReduxState))
   );
diff --git a/native/account/logged-out-modal.react.js b/native/account/logged-out-modal.react.js
--- a/native/account/logged-out-modal.react.js
+++ b/native/account/logged-out-modal.react.js
@@ -809,7 +809,7 @@
       state => !!(state._persist && state._persist.rehydrated && navContext),
     );
     const persistedStateLoaded = usePersistedStateLoaded();
-    const cookie = useSelector(cookieSelector);
+    const cookie = useSelector(cookieSelector(ashoatKeyserverID));
     const urlPrefix = useSelector(urlPrefixSelector(ashoatKeyserverID));
     invariant(urlPrefix, "missing urlPrefix for ashoat's keyserver");
     const loggedIn = useSelector(isLoggedIn);
diff --git a/native/data/sqlite-data-handler.js b/native/data/sqlite-data-handler.js
--- a/native/data/sqlite-data-handler.js
+++ b/native/data/sqlite-data-handler.js
@@ -47,7 +47,7 @@
   const rehydrateConcluded = useSelector(
     state => !!(state._persist && state._persist.rehydrated),
   );
-  const cookie = useSelector(cookieSelector);
+  const cookie = useSelector(cookieSelector(ashoatKeyserverID));
   const urlPrefix = useSelector(urlPrefixSelector(ashoatKeyserverID));
   invariant(urlPrefix, "missing urlPrefix for ashoat's keyserver");
   const staffCanSee = useStaffCanSee();
diff --git a/native/navigation/navigation-handler.react.js b/native/navigation/navigation-handler.react.js
--- a/native/navigation/navigation-handler.react.js
+++ b/native/navigation/navigation-handler.react.js
@@ -4,6 +4,7 @@
 
 import { cookieSelector } from 'lib/selectors/keyserver-selectors.js';
 import { isLoggedIn } from 'lib/selectors/user-selectors.js';
+import { ashoatKeyserverID } from 'lib/utils/validation-utils.js';
 
 import { logInActionType, logOutActionType } from './action-types.js';
 import ModalPruner from './modal-pruner.react.js';
@@ -60,7 +61,7 @@
 
   const hasCurrentUserInfo = useSelector(isLoggedIn);
 
-  const cookie = useSelector(cookieSelector);
+  const cookie = useSelector(cookieSelector(ashoatKeyserverID));
   const hasUserCookie = !!(cookie && cookie.startsWith('user='));
 
   const loggedIn = hasCurrentUserInfo && hasUserCookie;
diff --git a/native/selectors/socket-selectors.js b/native/selectors/socket-selectors.js
--- a/native/selectors/socket-selectors.js
+++ b/native/selectors/socket-selectors.js
@@ -38,7 +38,7 @@
     // the socket needs to be reopened. By including the cookie here,
     // whenever the cookie changes this function will change,
     // which tells the Socket component to restart the connection.
-    cookieSelector,
+    cookieSelector(keyserverID),
     (urlPrefix: ?string) => {
       if (!urlPrefix) {
         return null;
@@ -51,11 +51,18 @@
   keyserverID: string,
 ) => (state: AppState) => ?() => WebSocket = _memoize(baseOpenSocketSelector);
 
+const baseSessionIdentificationSelector: (
+  keyserverID: string,
+) => (state: AppState) => SessionIdentification = keyserverID =>
+  createSelector(
+    cookieSelector(keyserverID),
+    (cookie: ?string): SessionIdentification => ({ cookie }),
+  );
+
 const sessionIdentificationSelector: (
-  state: AppState,
-) => SessionIdentification = createSelector(
-  cookieSelector,
-  (cookie: ?string): SessionIdentification => ({ cookie }),
+  keyserverID: string,
+) => (state: AppState) => SessionIdentification = _memoize(
+  baseSessionIdentificationSelector,
 );
 
 function oneTimeKeyGenerator(inc: number): string {
diff --git a/native/socket.react.js b/native/socket.react.js
--- a/native/socket.react.js
+++ b/native/socket.react.js
@@ -45,7 +45,7 @@
     const inputState = React.useContext(InputStateContext);
     const navContext = React.useContext(NavContext);
 
-    const cookie = useSelector(cookieSelector);
+    const cookie = useSelector(cookieSelector(ashoatKeyserverID));
     const urlPrefix = useSelector(urlPrefixSelector(ashoatKeyserverID));
     invariant(urlPrefix, 'missing urlPrefix for given keyserver id');
     const connection = useSelector(connectionSelector(ashoatKeyserverID));
@@ -61,7 +61,9 @@
 
     const openSocket = useSelector(openSocketSelector(ashoatKeyserverID));
     invariant(openSocket, 'openSocket failed to be created');
-    const sessionIdentification = useSelector(sessionIdentificationSelector);
+    const sessionIdentification = useSelector(
+      sessionIdentificationSelector(ashoatKeyserverID),
+    );
     const preRequestUserState = useSelector(
       preRequestUserStateForSingleKeyserverSelector(ashoatKeyserverID),
     );
diff --git a/web/selectors/socket-selectors.js b/web/selectors/socket-selectors.js
--- a/web/selectors/socket-selectors.js
+++ b/web/selectors/socket-selectors.js
@@ -51,7 +51,7 @@
   keyserverID: string,
 ) => (state: AppState) => SessionIdentification = keyserverID =>
   createSelector(
-    cookieSelector,
+    cookieSelector(keyserverID),
     sessionIDSelector(keyserverID),
     (cookie: ?string, sessionID: ?string): SessionIdentification => ({
       cookie,
diff --git a/web/socket.react.js b/web/socket.react.js
--- a/web/socket.react.js
+++ b/web/socket.react.js
@@ -31,7 +31,7 @@
 
 const WebSocket: React.ComponentType<BaseSocketProps> =
   React.memo<BaseSocketProps>(function WebSocket(props) {
-    const cookie = useSelector(cookieSelector);
+    const cookie = useSelector(cookieSelector(ashoatKeyserverID));
     const urlPrefix = useSelector(urlPrefixSelector(ashoatKeyserverID));
     invariant(urlPrefix, 'missing urlPrefix for given keyserver id');
     const connection = useSelector(connectionSelector(ashoatKeyserverID));