diff --git a/src/lib/gramjs/sessions/CallbackSession.js b/src/lib/gramjs/sessions/CallbackSession.js
index d8add75c8..5e62f8bcb 100644
--- a/src/lib/gramjs/sessions/CallbackSession.js
+++ b/src/lib/gramjs/sessions/CallbackSession.js
@@ -89,7 +89,7 @@ class CallbackSession extends MemorySession {
             .keys(this._authKeys)
             .forEach((dcId) => {
                 const authKey = this._authKeys[dcId];
-                if (!authKey._key) return;
+                if (!authKey || !authKey._key) return;
 
                 sessionData.keys[dcId] = authKey._key.toString('hex');
                 sessionData.hashes[dcId] = authKey._hash.toString('hex');
diff --git a/src/modules/actions/api/sessions.ts b/src/modules/actions/api/sessions.ts
index 4d13605db..992b87f70 100644
--- a/src/modules/actions/api/sessions.ts
+++ b/src/modules/actions/api/sessions.ts
@@ -32,13 +32,22 @@ export function clearStoredSession() {
 }
 
 export function loadStoredSession(): ApiSessionData | undefined {
-  const legacySessionJson = localStorage.getItem(SESSION_USER_KEY);
-  if (!legacySessionJson) return undefined;
+  const userAuthJson = localStorage.getItem(SESSION_USER_KEY);
+  if (!userAuthJson) return undefined;
 
-  const { dcID: mainDcId } = JSON.parse(legacySessionJson);
+  let mainDcId: number | undefined;
   const keys: Record<number, string> = {};
   const hashes: Record<number, string> = {};
 
+  try {
+    const userAuth = JSON.parse(userAuthJson);
+    mainDcId = Number(userAuth.dcID);
+  } catch (err) {
+    // Do nothing.
+  }
+
+  if (!mainDcId) return undefined;
+
   DC_IDS.forEach((dcId) => {
     try {
       const key = localStorage.getItem(`dc${dcId}_auth_key`);