LG TV Error Code 408: How to Fix It

Easy 15-30 minutes Medium Severity Verified June 2026
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Error Code
408
Brand
LG TV
Product Type
smart_tv
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
15-30 minutes
LG TV error code 408 means that an app failed to install or update on your LG Smart TV, usually due to a network interruption, corrupted cache, insufficient storage, or a temporary glitch in the LG Content Store. This is a medium-severity issue — your TV still works fine, but the app you were trying to install won't be available until the problem is resolved. The good news is that error 408 can almost always be fixed at home without any tools or professional help.
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Tools You'll Need

How to Fix Error Code 408

  1. Restart Your LG TV

    Make sure to unplug from the wall outlet — not just pressing the power button — to ensure a full power cycle.

  2. Check Your Internet Connection

  3. Clear the LG Content Store Cache

    Clearing app data may log you out of the LG Content Store. Have your LG account credentials ready before doing this step.

  4. Free Up Storage Space on Your TV

  5. Update Your LG TV Firmware

    Do not unplug your TV or turn it off during a firmware update. Interrupting the update process can cause serious software problems.

  6. Reset the LG Content Store

  7. Perform a Factory Reset as a Last Resort

    A factory reset erases all personalized settings, installed apps, and login credentials stored on the TV. Make a note of any custom settings or account passwords before proceeding.
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When to Call a Professional

If error 408 persists after completing all steps including the factory reset, the issue may be related to a hardware fault in the TV's internal storage or a deeper software corruption that cannot be repaired by the end user. In this case, contact LG Support at 1-800-243-0000 or visit LG's official support website to arrange a service appointment. If your TV is still under warranty, LG may repair or replace the unit at no cost. A certified LG technician can run deeper diagnostics and replace internal storage components if necessary.

Frequently Asked Questions

What does LG TV error code 408 mean?
Error code 408 on an LG TV means that an app installation or update has failed. It is typically caused by a poor internet connection, corrupted cache data, insufficient storage space on the TV, or a temporary glitch in the LG Content Store.
Why does my LG Smart TV keep showing error 408 when installing apps?
Repeated error 408 messages usually indicate an ongoing issue with your network connection, a full or nearly-full internal storage, or outdated TV firmware that is incompatible with the current version of the LG Content Store. Try clearing the Content Store cache, freeing up storage, and updating the firmware to resolve the recurring error.
Will a factory reset fix LG TV error code 408?
In most cases, yes. A factory reset clears all software data including corrupted files that may be blocking app installations. However, it should be used as a last resort because it erases all your settings, installed apps, and preferences. Try the simpler steps first — restarting, clearing cache, checking your network, and updating firmware.
Can a slow internet connection cause error 408 on LG TV?
Yes. LG TV app installations require a stable and reasonably fast internet connection. If your connection drops or is too slow during the download, the installation fails and error 408 is displayed. LG recommends a minimum of 4 Mbps for general Smart TV usage. Using a wired Ethernet connection instead of Wi-Fi can significantly improve reliability.
How much storage does an LG Smart TV need to install apps?
Most LG Smart TV apps require between 50 MB and 300 MB of free space, though some larger apps may need more. If your TV's internal storage is nearly full, new apps may fail to install with error 408. It is recommended to keep at least 500 MB of free space available. You can free up space by uninstalling apps you no longer use through the Application Manager in Settings.

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