You're updating an app, the progress bar crawls all the way to the end — and instead of "Installed" you get this: "Error 963". Your phone has plenty of storage, the internet is fine, and every other app updates without complaint. Only this one refuses. Again and again.
Here's what's actually going on: Error 963 shows up when the Play Store can't finish writing an app update onto your phone. The most common trigger is a tug-of-war between internal storage and the SD card — the app being updated often lives on the card, and the Play Store's update process trips over it. The rest of the time it's stale cache, a bad Play Store update, or leftover junk from the Downloads manager.
Quick Answer
When Error 963 appears, start here: Settings → Apps → Google Play Store → Storage → Clear cache (tap Clear data too if the error survives). Then restart your phone and try the update again. If it still fails, go to Settings → Storage and unmount your SD card before updating — that storage conflict is the classic cause of 963. Covers Android 10 through 14.
In This Guide
Fix 1 — Clear the Play Store's Cache and Data
This is the fix that resolves the majority of Error 963 cases, so don't skip it just because it sounds basic. Clearing the cache removes temporary update files the Play Store keeps around, and clearing data resets the store app itself. Your downloaded apps are untouched.
- Open Settings → Apps and tap Google Play Store.
- Tap Storage (or Storage & cache), then tap Clear cache.
- Still failing? Go back and tap Clear data (labeled Clear storage on some phones), then confirm.
- Restart your phone, open the Play Store, and try the update again.
Path differences by brand: Pixel shows Settings → Apps → See all apps → Google Play Store → Storage & cache; Samsung (One UI) shows Settings → Apps → Google Play Store → Storage; Xiaomi (HyperOS) shows Settings → Apps → Manage apps → Google Play Store → Clear data. If you cleared data, the Play Store will ask you to accept its terms again — that's normal.
Fix 2 — Uninstall Recent Play Store Updates
Sometimes the Play Store itself is the problem. A freshly installed Play Store update can carry a bug that breaks the install process — and 963 is one of the error codes a buggy store version throws. Rolling the Play Store back to its factory version forces a clean self-update.
- Open Settings → Apps → Google Play Store.
- Tap the three-dot ⋮ menu in the top-right corner and choose Uninstall updates.
- Confirm, then restart your phone.
- Open the Play Store — it will update itself to the latest version in the background. Wait a few minutes before retrying your app update.
If you don't see the three-dot menu, the option may be labeled Uninstall updates right on the app's info screen (common on Samsung phones). After the rollback, don't sideload or rush a manual Play Store APK — let it update itself.
Fix 3 — Unmount Your SD Card Temporarily
This is the signature fix for Error 963. On many phones the Play Store writes an app update to internal storage while parts of the app live on the SD card, and the two locations fight — that's when 963 appears. Unmounting the card for the duration of the update removes the conflict.
- Open Settings → Storage.
- Tap Unmount SD card (on Samsung: Storage → ⋮ → Storage settings → SD card → Unmount) and confirm.
- Go back to the Play Store and run the app update that was failing.
- Once it installs, return to Settings → Storage and tap Mount SD card to bring it back.
You don't need to physically remove the card for most phones — unmounting is enough. But if the card slot is easy to reach, pulling it out entirely also works and rules out a loose connection. Keep the card unmounted only for the update itself; long-term your apps and photos may depend on it.
Fix 4 — Move the App to Internal Storage
If the failing app itself sits on the SD card, the update has to rewrite files in two places at once — and that's exactly the scenario 963 loves. Moving the app to internal storage permanently removes the conflict, which is the better fix if Fix 3 works but the error keeps returning.
- Open Settings → Apps and tap the app that fails to update.
- Tap Storage and look for Change or Storage location.
- Select Internal storage and wait for the move to finish.
- Retry the update from the Play Store.
Not every app offers this — some apps lock themselves to wherever they were installed, and a few newer Android versions removed the option entirely for certain apps. If there's no storage-location option, your other option is to uninstall the app and reinstall it fresh (you'll lose its local data, so back up anything important first).
Fix 5 — Force Stop, Restart, and Clear the Downloads Cache
There's a quiet middleman in every Play Store update: the system's Download Manager. It fetches the update file before the Play Store installs it, and when its cache corrupts, the Play Store gets a damaged file — and blames the whole thing with Error 963. Force-stopping both apps and clearing the download cache breaks the cycle.
- Go to Settings → Apps → Google Play Store and tap Force stop.
- Still in Apps, tap the filter/⋮ menu, enable Show system apps, and find Download Manager (or Downloads).
- Tap Storage → Clear cache on it — do not clear its data, just the cache.
- Restart your phone (a full restart, not just locking the screen), then retry the update.
This is also the right moment to free up storage: updates can fail at the very end if internal storage is nearly full. Keep at least 1–2 GB free. Check under Settings → Storage and delete a few unused apps or large videos if you're close to the limit.
Fix 6 — Remove and Re-Add Your Google Account
When nothing else works, the problem may be a corrupted account session between your phone and Google's servers. Removing the account and signing back in rebuilds that session from scratch. It's annoying, but it fixes stubborn error codes — including 963 — that survive every cache clear.
- Open Settings → Accounts (or Passwords & accounts) and tap your Google account.
- Tap Remove account and confirm. (Your emails, contacts, and Play purchases are tied to the account in the cloud, not the phone.)
- Restart your phone.
- Go back to Settings → Accounts → Add account → Google and sign in again.
- Open the Play Store and retry the update.
Before removing the account, make sure you know its password — or have a recovery method ready. This is the last-resort step, so only do it if the five fixes above all failed on the same app.
Watch: Play Store Error 963 Fixed Step by Step
Prefer a walkthrough? This video covers Play Store error 963 step by step:
Video by Howtosolveit — full credit to the creator.
Related Guides
Frequently Asked Questions
What exactly is Play Store Error 963?
Error 963 appears when an app install or update fails partway through. It usually means the Play Store ran into trouble writing the app's files — most often a conflict between internal storage and the SD card, corrupted Play Store cache, or a faulty Play Store update. The number itself doesn't tell you which cause it is; the order of fixes above is arranged from most to least likely.
Will clearing Play Store data delete my downloaded apps?
No. Clearing the Play Store's cache or data only resets the store app itself — your installed apps, their data, and your purchased apps all stay. The store will ask you to re-accept its terms and may briefly forget your download preferences, but nothing you installed is removed.
Why does Error 963 keep coming back on the same app?
The usual repeat offender is an app stored on the SD card (Fix 4 fixes it permanently) or a failing SD card that's quietly corrupting writes. If the error survives every fix, try the update with the SD card physically removed — if it then works, the card itself is the real problem and should be replaced.
By Sameer Zehri | App Fix Guru Editor | Last updated: October 2026
