Reinstall Sling TV App to Fix Playback Issues Fast

By George · · 10 min read

If Sling is stuck buffering, showing a black screen, or crashing mid-playback, the reinstall sling tv app approach can save you real time. Start with the quickest fixes first, because many playback problems are caused by a temporary app glitch or a frozen streaming session. When you do need a reinstall, doing it the right way (including cache/app data) prevents the same issue from coming right back.

For more help, see our Sling TV Won't Load, Buffering & Playback Problems guide.

Start with the fastest fixes

Restart the app, then relaunch playback

A fast relaunch clears temporary playback sessions that can cause freezes, endless loading, or audio/video desync. Do this first before reinstalling.

  1. Fully close the Sling TV app (from the app switcher/menu, choose Close or Force stop).
  2. Relaunch Sling TV and try playing the same channel/program again.
  3. If playback still fails, exit back to the home screen and relaunch once more, not just resume the paused stream.

If you see Sling error codes, note the exact code (for example, 21-20 or 8-xxx) because it determines the next step.

Power-cycle the device and TV box

A power-cycle resets the streaming hardware that may hold onto a bad connection or stuck video session. This is the first “system” fix before reinstalling.

  1. Unplug your streaming device/TV box from power.
  2. Unplug your TV (or leave it on—unplugging the box is the key step).
  3. Wait 60 seconds.
  4. Plug the device back in and boot fully.
  5. Launch Sling TV and start playback again.

For best results, avoid switching devices or apps immediately—wait until Sling loads the live guide normally.

If Sling itself is down or your account has a session/auth problem, reinstalling won’t help. Confirm whether the issue is widespread before deeper troubleshooting.

  1. Check Sling’s status/help page (or a trusted outage monitor) for active service disruptions.
  2. Look for account-related messages in the app (sign-in required, subscription issue, or authorization prompts).
  3. If the app shows a specific code, write it down exactly—codes like 8-xxx indicate authorization problems, not just playback glitches.

If there’s an outage, wait it out—attempting multiple reinstalls only wastes time.

Update or reinstall the Sling TV app

Confirm the app is on the latest version

An outdated Sling app can break playback or fail during channel loads. Updating is faster than reinstalling and keeps you on the newest player components.

  1. Open your device’s app store (Roku Channel Store, Apple App Store, Google Play Store, Amazon Appstore, or your smart TV’s app updates page).
  2. Search for Sling TV and select Update if available.
  3. After updating, launch Sling TV and try again.

If the update isn’t offered but playback is broken, proceed to cache/app data cleanup and reinstall.

Clear cache and app data before reinstalling

Bad cache and stale app data frequently cause freezing, buffering, and black-screen playback. Clearing them removes broken local files before you reinstall.

  1. On phones/tablets: Go to Settings > Apps > Sling > Storage and choose Clear cache.
  2. On some devices: choose Clear data if the option is available (this resets app local state).
  3. Relaunch Sling TV and test playback once.

If the issue persists after clearing cache (and data when available), uninstall and reinstall Sling to force a clean install.

Uninstall and reinstall Sling TV on your device

Reinstalling replaces the app with a clean copy and fixes corrupt installs that updates can’t repair.

  1. Uninstall Sling TV from your device (Roku/Fire TV/Apple TV/smart TV remove the app from the device home screen/apps list).
  2. Restart the streaming device after uninstalling.
  3. Reinstall Sling TV from the official store/app gallery for your device.
  4. Open Sling TV and sign in again.

Reinstalling doesn’t delete your Sling account or subscription—it only removes and rebuilds the app on your device.

Fix device and TV box problems

Restart streaming sticks, smart TVs, and set-top boxes

Sometimes the hardware gets into a bad state that only a restart clears. Fix the device first so Sling can load the stream normally.

  1. Restart the streaming stick/TV box from its settings menu (or power-cycle if no restart option exists).
  2. Wait until the device fully returns to the home screen.
  3. Launch Sling TV and start playback.

If you have multiple streaming devices, test on one you’re not currently using to isolate whether the problem is device-specific.

Troubleshoot frozen screens, black video, and buffering

When Sling loads but video won’t play, it’s usually cache, an overloaded connection, or a device playback glitch. Use targeted steps to narrow it down quickly.

  1. Close Sling completely and relaunch the app.
  2. If you see a black screen or constant loading, clear Sling cache/app data (or reinstall if cache clearing doesn’t help).
  3. Reduce network pressure: pause large downloads and disconnect other devices temporarily.
  4. If possible, connect your streaming device via Ethernet for a more stable stream.

If buffering keeps happening on live HD, aim for strong bandwidth (Sling recommends at least 5 Mbps for one HD stream).

Reset the TV box only when basic steps fail

A full reset is disruptive and can erase settings and cached device configuration. Use it only after restart, power-cycle, app update/reinstall, and cache cleanup fail.

  1. Power-cycle the TV box/streaming device once more.
  2. Reinstall/repair Sling (and clear cache/app data) before resetting hardware.
  3. Then perform the TV box factory reset from Settings only if the problem continues.

After a reset, reinstall Sling from the official store and sign back in before re-testing playback.

Resolve Sling error codes and location issues

Handle loading errors such as 6-9 and playback stalls

Loading errors like 6-9 and playback stalls often point to a temporary Sling player issue or a connection that can’t sustain the stream. Fix the app session and the network path next.

  1. Fully close Sling, then relaunch and try the same program.
  2. Power-cycle the streaming device/TV box.
  3. Clear Sling cache/app data.
  4. If the error persists, check Sling status for outages and retest after service stabilizes.

If you get the same stall at multiple times of day, focus on connection stability (next sections cover that) rather than repeatedly reinstalling.

If Sling shows a “blink-twice” behavior (video flashes then stops) or the app crashes, the install or local app state is usually corrupted. Rebuild the app session cleanly.

  1. Force-close Sling and relaunch.
  2. Clear Sling cache/app data.
  3. Uninstall Sling TV, restart the device, then reinstall Sling from the official store.
  4. After reinstall, sign in again and try a different channel to rule out a single-program issue.

If crashes happen immediately after launch on a specific device, try launching Sling on another device on the same network.

Correct location, VPN, and network settings for error 11-6

Error 11-6 typically indicates a location or network mismatch such as VPN use or an IP region that doesn’t match your current area/region requirements. Fix your network identity before reinstalling.

  1. Turn off your VPN (and any VPN browser extensions if applicable).
  2. Restart your modem/router so the device gets a fresh IP.
  3. Recheck Wi-Fi/network settings and ensure you’re using your normal home network.
  4. Launch Sling again and attempt playback.

If you recently changed networks or moved devices, error 11-6 becomes more likely—correct the network identity first.

Check your connection and app permissions

Test internet speed and Wi-Fi stability

Buffering and “keeps loading” issues commonly come from weak bandwidth or unstable Wi‑Fi, not from Sling being broken. Get a real signal measurement before reinstalling again.

  1. Run a speed test on the same Wi‑Fi network (or via the streaming device if available).
  2. If speed is below target, move the device closer to the router or switch to a different room/access point.
  3. If you can, use Ethernet for the streaming device.
  4. Pause other heavy downloads/streams while testing Sling.

For live HD, aim for at least 5 Mbps per HD stream.

Review device permissions, date, and time settings

Incorrect date/time or restrictive permissions can break authorization and app session handling. Fix these system-level items so Sling can validate your stream correctly.

  1. Set the device Date & Time to Automatic (use network time).
  2. Check Sling app permissions for network access and any required background/app data permissions.
  3. Ensure the device is not blocking Sling from running in the background (where the OS has that setting).

After adjusting settings, close Sling fully and reopen it.

Sign out and back in to refresh the session

An expired or corrupted session token can cause repeated playback failure even after reinstalling. A clean sign-out refreshes authentication and app state.

  1. In Sling TV, go to Account/Settings and choose Sign out.
  2. Close Sling completely.
  3. Relaunch Sling TV and sign back in with your account credentials.

If sign-in works but playback fails, proceed to the error-code section because authorization may be the real blocker.

Know when to escalate the issue

Gather device details and error messages before contacting support

If you’ve restarted, power-cycled, updated/reinstalled, and resolved obvious connection problems, support can narrow down the cause fast when you provide the right info.

  1. Write down your exact error code (example: 6-9, 9-803, 21-20, 11-6, or an 8-xxx authorization code).
  2. Note your device model (Roku/Fire TV/Apple TV/smart TV make and model, or streaming stick version).
  3. Include what you tried in order (relaunch, power-cycle, cache clear, uninstall/reinstall).
  4. Record whether other devices on the same network can play Sling.

Support uses these details to determine whether it’s an account issue, a device-specific bug, or a network problem.

Decide whether the problem is app-specific or network-wide

You can quickly isolate whether this is limited to Sling or affects the whole network. That decision determines whether you focus on app fixes or connection troubleshooting.

  1. Test Sling on a second device on the same Wi‑Fi.
  2. If Sling fails on multiple devices, treat it as network-wide or location-based and focus on error 11-6, VPN, and Wi‑Fi stability.
  3. If Sling works on other devices but fails on one device, focus on that device’s app install and hardware (cache clear, reinstall, or device reset only after basics fail).

Once you know the scope, avoid repeating unnecessary reinstalls.

Helpful answers

Frequently Asked Questions

Should I reboot Sling before reinstalling the app?

Yes. A quick restart of the app, device, or TV box often fixes temporary playback problems without needing a reinstall. Start by fully closing Sling and relaunching playback. If it still fails, power-cycle the streaming device/TV box (unplug for 60 seconds) and try again before you uninstall anything. Reinstalling is best reserved for persistent freezing, black screen playback, app crashes, or repeated load failures after basic steps.

Will reinstalling Sling TV delete my account?

No. Reinstalling the app removes the Sling TV application from your device, not your Sling account or subscription. Your login information and subscription remain tied to your Sling account. After reinstalling, you’ll sign in again to restore access to your channels and saved preferences (if the device/app supports those).

Why does Sling keep loading or freeze on a black screen?

This can happen because of a bad app cache, an outdated app version, a device glitch, or a network issue. Restarting and reinstalling are the most common fixes, but don’t skip cache clearing and connection checks. If you’re on Wi‑Fi, buffering and black-screen freezes are often caused by unstable signal or insufficient bandwidth for HD. Also check for outages and look for error codes because they point to authorization or location problems.

What does Sling error 11-6 usually mean?

It often points to a location or network issue, such as VPN use, incorrect IP location, or a connection that does not match your current region. Fix it by turning off your VPN, restarting your router/modem to get a fresh IP, and returning to your normal home network. Reinstalling won’t resolve a location mismatch—network identity is the key.

When should I reset my TV box?

Only after you have tried restarting the app, power-cycling the device, updating the app, and reinstalling Sling. A reset is more disruptive and may erase settings. Use it when the problem persists on that specific box after app cleanup and reinstall, especially if other devices can play Sling normally on the same network.