How to Fix App could not be downloaded due to error 400

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The app could not be downloaded due to an error 400 is a Google Play Store Error affecting Android smartphones. Another format of this error is something like this- Unknown error code during application install 400. This issue is caused when you try to update or download app on a slow internet connection (Mobile Data or Wi-Fi). So make sure you have a working internet connection.  In my case, the error was resolved automatically on second try. If you are still getting the error while updating or installing apps in Google Play, try these quick methods to fix Google Play Error 400:

How to Fix Installation-Update Error 400 in Google Play

Method 1: Cancel download and re-install

This is a simple method.  Cancel the installation mid-way and then retry installation or update in Google Play.


Method 2: Disconnect and reconnect to a different network

The error is very frequent in slow networks so try to connect to a different Wi-Fi or use Mobile Data LTE/3G. After connecting to the new network try to install/update your app or game.


Method 3: Clear Data and Cache of download manager

(Note: If you have any important files in the Downloads folder, copy it to another location)
  • Go to Settings >> Apps >> All >> Select "Download manager 
  • Clear Cache and Data 


Method 4: Clear Proxy

  • Go to Settings >> Wireless & networks >> More >> Mobile Networks >> Access Point Names (APN)
  • Your mobile network's wap (networknamewap) must be selected by default >> Click it 
  • Select "Proxy" >> Clear/delete the address number 
  • Select "Port" >> Clear/delete the port number
  • Now open Google Play and try to update or download the app that was giving the error

Method 5: Uninstalling Google Play Update

  • Go to Settings >> Apps>>All >> Scroll down and Select "Google Play Store"
  • Select "Uninstall Updates"
  • Open Google Play Store and try to update or download the app(or game) 
Some of the methods can help resolve not just error 400 but also Play store error 924 . Did any of these methods work for you? Please let us know in the comments if you have other fixes or possible solution for the Google Play error code 400. 

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