diff --git a/lib/actions/holder-actions.js b/lib/actions/holder-actions.js
--- a/lib/actions/holder-actions.js
+++ b/lib/actions/holder-actions.js
@@ -122,6 +122,35 @@
   return { added, notAdded, removed, notRemoved };
 }
 
+function useClearAllHolders(): () => Promise<void> {
+  const dispatchActionPromise = useDispatchActionPromise();
+  const identityContext = React.useContext(IdentityClientContext);
+  const getAuthMetadata = identityContext?.getAuthMetadata;
+
+  const holdersToRemove = useSelector(state =>
+    Object.entries(state.holderStore.storedHolders)
+      .filter(([, holderInfo]) => holderInfo.status !== 'PENDING_REMOVAL')
+      .map(([blobHash, { holder }]) => ({ blobHash, holder })),
+  );
+
+  return React.useCallback(async () => {
+    invariant(getAuthMetadata, 'Identity context not set');
+    const authMetadata = await getAuthMetadata();
+    const input = {
+      holdersToRemove,
+      holdersToAdd: [],
+    };
+    void processHoldersAction(input, authMetadata);
+    const promise = processHoldersAction(input, authMetadata);
+    void dispatchActionPromise(
+      processHoldersActionTypes,
+      promise,
+      undefined,
+      input,
+    );
+  }, [dispatchActionPromise, getAuthMetadata, holdersToRemove]);
+}
+
 function useProcessBlobHolders(): (
   blobOperations: $ReadOnlyArray<BlobOperation>,
 ) => Promise<void> {
@@ -184,4 +213,4 @@
   );
 }
 
-export { useProcessBlobHolders };
+export { useClearAllHolders, useProcessBlobHolders };
diff --git a/lib/actions/user-actions.js b/lib/actions/user-actions.js
--- a/lib/actions/user-actions.js
+++ b/lib/actions/user-actions.js
@@ -3,6 +3,7 @@
 import invariant from 'invariant';
 import * as React from 'react';
 
+import { useClearAllHolders } from './holder-actions.js';
 import { useUserIdentityCache } from '../components/user-identity-cache.react.js';
 import {
   useBroadcastDeviceListUpdates,
@@ -154,6 +155,8 @@
   const preRequestUserState = usePreRequestUserState();
   const callKeyserverLogOut = useKeyserverCall(keyserverLogOut);
 
+  const removeAllHolders = useClearAllHolders();
+
   const commServicesAccessToken = useSelector(
     state => state.commServicesAccessToken,
   );
@@ -204,6 +207,7 @@
           keyserverIDs,
         }),
         identityPromise,
+        removeAllHolders(),
       ]);
       return {
         ...result,
@@ -219,6 +223,7 @@
       identityClient,
       logOutType,
       preRequestUserState,
+      removeAllHolders,
       skipIdentityLogOut,
     ],
   );