How to Fix Google Play Store "Authentication Is Required" Error
What "Authentication is required" means
The "Authentication is required" error appears in the Google Play Store when you tap Install or Update and the store refuses to start the download. Instead of the usual progress bar, you get a short pop-up: "Error: Authentication is required. You need to sign into your Google Account." Retry after retry shows the same message, and it can also block paid purchases and in-app buys.
Behind the scenes, the Play Store doesn't check your password every time you download something. When you first sign in, Google gives your phone a long-lived sign-in token that quietly proves you are who you claim to be. That token can go stale or break: you changed your Google password, something removed the account from the phone, account sync got paused, the store's cached session data got corrupted, or your phone's clock drifted far enough that Google's security certificates stopped validating. When the token fails, the store can't verify you, so it blocks the transaction rather than let an unauthenticated device download paid or tied-to-account content.
The good news: this is a sign-in problem, not a broken phone. It has nothing to do with your apps, your storage, or your network, and in most cases one fix — removing the Google account and signing back in to get a fresh token — clears it in a couple of minutes with zero data loss.
Common causes
- Stale or invalid sign-in token: the token the Play Store uses to prove you are signed in has expired or corrupted — often after a Google password change or a background account glitch. This is the most common cause, and it's why the error appears even when the account still shows up on the phone.
- Google account removed or signed out: if the account was removed from the device, the store has nothing to authenticate against, and every download fails this way.
- Account sync paused or turned off: if sync is disabled under your Google account, the authentication handshake with Google's servers can't complete.
- Incorrect date and time: Google's sign-in relies on secure HTTPS connections, and if your phone's clock is far off, certificate validation fails and the login is rejected.
- Outdated or glitchy Google Play Services: the background framework that handles Google account authentication for all Google apps — if it's outdated or its cache is damaged, sign-in verification breaks everywhere, including the Play Store.
How to fix it — step by step
Work through these fixes in order. Most people are fixed by step 2.
- Check your sign-in status and force stop the Play Store. First, confirm what the Play Store actually sees. Open the Play Store and tap your profile picture in the top-right corner — if you see a "Sign in" prompt instead of your Google account, sign in there and retry the download. If your account is already listed, close the store, then go to Settings > Apps > See all apps > Google Play Store and tap Force stop. This kills any stuck session the store was using and makes it re-check your sign-in from scratch. Reopen the Play Store and try the download again.
- Remove and re-add your Google account. This is the fix that works most often, because it forces Google to issue a brand-new sign-in token. Before you start, make sure you know your Google password — you'll need it to sign back in. Go to Settings > Passwords & accounts, tap your Google account, then tap Remove account and confirm. Restart your phone, then go back to Settings > Passwords & accounts > Add account > Google and sign in with the same account. Open the Play Store and retry your download — the "Authentication is required" error is usually gone at this point.
- Clear the Google Play Store's cache and data. If the error is still there, wipe the store's local session data. Go to Settings > Apps > See all apps > Google Play Store > Storage & cache. Tap Clear cache first, then Clear storage (or Clear data) and confirm. This removes the store's temporary files, including any broken authentication state — it does not delete your installed apps, photos, or files. Reopen the Play Store, accept the terms if asked, and try the download again.
- Clear the Google Play Services cache. Google Play Services is the framework that handles Google sign-ins, so a damaged cache here keeps the error alive. Go to Settings > Apps > See all apps > Google Play Services > Storage & cache and tap Clear cache. Only clear the cache here — do not clear all data unless the error persists, since Play Services holds sync state that other Google apps use. Restart your phone and retry the install.
- Fix your date and time. A wrong clock silently breaks Google's secure sign-in. Go to Settings > System > Date & time and turn on "Set time automatically" and "Set time zone automatically." If the phone was showing the wrong time or date, this corrects it immediately. Restart the phone, then open the Play Store and retry the download — authentication should now go through.
- Uninstall Play Store updates and check account sync. If nothing above worked, roll the store back to its factory version and verify sync is healthy. Go to Settings > Apps > See all apps > Google Play Store, tap the three-dot menu in the top-right, and choose Uninstall updates. Then go to Settings > Passwords & accounts, tap your Google account, tap Account sync, and make sure sync is turned on (toggle it off and back on to force a fresh sync). Open the Play Store — it will update itself cleanly in the background — and retry the download.
Did this fix it? Quick checklist
- Apps download and update without the "Authentication is required" pop-up
- The Play Store shows your Google account when you tap the profile icon
- Account sync is turned on in Settings > Passwords & accounts
- Paid apps and in-app purchases complete normally
If the error still appears after all six steps, change your Google password from a browser, then remove and re-add the account on the phone with the new password. As a final measure, back up your data and consider a factory reset (Settings > System > Reset options > Erase all data).
Frequently asked questions
What does "Authentication is required" mean on the Play Store?
It means the Play Store can't verify your Google account sign-in, so it blocks downloads, updates, and purchases. The account itself is usually fine — the stored sign-in token on the phone is stale or corrupted, which is why the error can appear even when your account still shows as signed in.
Will removing my Google account delete my photos or apps?
No. Removing the account only detaches the account link from the phone — your installed apps, photos, messages, and files all stay exactly where they are. You sign back in with the same Google account afterward. Just make sure you know your Google password before you remove it.
Why does this error appear even though I'm already signed in?
Because the Play Store authenticates with a stored token, not with your password. The account can look perfectly signed in while the underlying token is expired or broken — often after a password change, a sync glitch, or corrupted store data. Removing and re-adding the account forces a fresh token, which is why it's the most reliable fix.
Can a wrong date and time really cause this error?
Yes. Google's sign-in happens over secure HTTPS connections, and if your phone's clock is significantly off, the security certificates fail validation and the login is rejected. Turning on automatic date and time in Settings > System > Date & time fixes it in seconds.