Continue with nearby guides in the same topic to rule out adjacent causes faster.
Perplexity 'Access Denied' errors indicate either a geographic restriction or an account permission problem, while 'Session Expired' simply means your 30-day login session has ended and you need to sign in again. For Session Expired, just log back in — your data is safe. For Access Denied, try disabling your VPN first, then check whether your account or subscription is in good standing at perplexity.ai/settings.
Perplexity creates a separate account each time you sign in with a different method — for example, if you first used Google and then tried email/password, you have two accounts at different email addresses. The fix is to always use the same login method you used at sign-up. To merge accounts or migrate Pro access, email support@perplexity.ai — there is no self-serve merge tool.
If you can't log into Perplexity, the three most likely causes are: account temporarily locked after multiple failed attempts (wait 15–30 minutes), email verification not completed at signup (check your inbox for a verification link), or an OAuth account conflict where you signed up with Google but are trying to log in with a different email. Identify which scenario applies, then follow the targeted fix below.
If Perplexity keeps logging you out, the most common cause is browser cookies being blocked or cleared automatically. Fix it by going to your browser's cookie settings and allowing perplexity.ai to store cookies, then disable any 'clear cookies on close' setting. Browsers in private/incognito mode always log you out on close — this is by design. If you use a normal browser window but still get logged out, the issue is typically a cookie-blocking extension or a strict browser privacy setting.
Perplexity desktop login failures are caused by 4 main issues: browser extensions blocking OAuth requests, expired SSL certificates on corporate networks, corrupted cached session data, or an enterprise firewall intercepting the authentication redirect. Start by opening an incognito window and trying to log in — if that works, a browser extension is the cause. If incognito also fails, test on a mobile hotspot to rule out network-level interference.
Perplexity mobile login fails for different reasons on iOS and Android. On iOS, the most common cause is that Sign in with Apple is misconfigured or your iCloud account is logged out, which prevents the Apple ID handshake. On Android, outdated Google Play Services breaks Google sign-in. In both cases, force-close the Perplexity app, clear the app cache, and try again — if that fails, uninstall and reinstall the app to get a clean authentication state.