Fix: GTA V Error Failed zlib call (ERR_GEN_ZLIB_2)

2013’s Grand Theft Auto (GTA) V is an action-adventure video game developed by Rockstar North and published by Rockstar Games. PC players are quite satisfied with the GTA V gameplay that offers stunning graphics quality and gaming controls. But somehow, a couple of players are getting affected by the GTA V Error Failed zlib call (ERR_GEN_ZLIB_2) on the PC. It’s quite unfortunate for all. Now, if you’re also facing the same, don’t worry.

The ERR GEN ZLIB 2 failed zlib error is mostly caused by corrupted or missing game files on the system during installing or updating the game. Luckily, a couple of possible workarounds are available that should come in handy for you. The official Rockstar Games Support forum has also acknowledged this particular error and provided a few troubleshooting methods that you can check out below. So, without further ado, let’s jump into it.

Fix: GTA V Error Failed zlib call (ERR_GEN_ZLIB_2)

According to multiple reports online, affected players are getting the “Failed zlib call. Please reboot, verify the game data, or reinstall the game. For more information, please visit: http://rsg.ms/verify.” error message quite often while trying to launch the GTA V game. So, depending on which gaming launcher you’re using, you can follow the methods below one by one until the problem gets fixed.

1. Verify and Repair Game Files

First of all, you should try verifying and repairing the installed GTA V game files properly to ensure there is no issue at all. Mostly corrupted or missing game files can occur several issues with the game launching whatsoever. Make sure not to run the verification process while performing other system-intensive processes because it may cause issues with the repairing process. Don’t run this process for multiple games at the same time. To do so:

For Rockstar Games Launcher:

• Open the Rockstar Games Launcher on your PC.
• Next, make sure to sign in to the account > Go to Settings.
• Select the GTA V game from the list under My installed games on the left pane.
• Click on Verify Integrity under the Verify game file integrity option on the right pane.
• Wait for the process to be completed and a pop-up message will appear that your game is verified and ready to play.
• Launch the GTA V game and check for the error again.

For Epic Games Launcher:

Sometimes verifying and repairing your installed game files may resolve the corrupted or missing game files on the PC that basically prevents you from being able to play the game until you fix it.

• Open the Epic Games Launcher on your PC > Go to the Library section.
• Click on the three dots icon next to GTA V > Click on Verify from the drop-down menu.
• It may take some time depending on the size of the game. Once done, reboot the launcher and play the game.

For Steam Client:

If, in case, you’re missing out on in-game textures or facing startup crashes or any error while launching the game, then make sure to verify and repair the game files properly on the computer. To do so:

• Open the Steam client > Go to Library.
• Here, right-click on the GTA V game from the left pane.
• Make sure to click on Properties from the drop-down menu.
• Next, select the Local Files tab > Click on the Verify integrity of game files… button.
• The Steam launcher will verify the game files now, which may take several minutes, depending on the game file size.
• Once done, reboot the PC to apply changes > Launch the Steam client and play the game to check for the issue.

Note: One or more game files may fail to verify in this process, but that’s normal. You don’t need to worry about it. The failed files are local configuration files that shouldn’t be replaced in this process. You can skip this message.

2. Reinstall GTA V

Well, if somehow the repairing process didn’t work for you, then make sure to uninstall and reinstall the GTA V game on the PC respective to your game launcher because some corrupted or missing game files may trigger several issues. Such kinds of issues can be fixed manually by following the steps below.

For Rockstar Games Launcher:

• First of all, restart your PC to refresh the system.
• Now, click on the Windows icon to open the Start menu.
• Search and open Control Panel > Click on Uninstall a Program.
• Here, find the Rockstar Games Launcher and right-click on it.
• Select Uninstall and follow the on-screen instructions to complete the process.
• Once done, find the Rockstar Games Social Club app and right-click on it.
• Select Uninstall and complete the process > Open File Explorer (This PC).
• Locate and delete the following folders one by one (If you can’t find a folder then you may skip it):
  • C:\Users\[USERNAME]\Documents\Rockstar Games\Social Club
  • C:\Users\[USERNAME]\Documents\Rockstar Games\Launcher
  • C:\Program Files (x86)\Rockstar Games\Social Club
  • C:\Program Files\Rockstar Games\Social Club
  • C:\Program Files\Rockstar Games\Launcher

Note: If, in case, you’ve installed the Rockstar Games Launcher on a different drive then navigate to the respective location and then delete the mentioned folders.

• You can visit the Rockstar Social Club website link and Reinstall the Rockstar Games Launcher.
• Finally, Reinstall the GTA V game, and play again to check for the Error Failed zlib call (ERR_GEN_ZLIB_2).

For Steam Client:

• Open the Steam launcher > Go to Library.
• Right-click on GTA V from the list of installed games from the left pane.
• Scroll to Manage > Click on Uninstall.
• Navigate to the C:\Program Files (x86)\Steam\steamapps\common\Grand Theft Auto V folder on your PC. [If you’ve installed the game to another drive then you can navigate there]
• Now, make sure to Delete all folders and files located there.
• Once done, Reinstall the GTA V game from the Steam store section.
• Finally, launch the GTA V game to check for the error again.

For Epic Games Launcher:

• Open the Epic Games Launcher > Click on Library on the left sidebar.
• Find Grand Theft Auto V from the list of installed games.
• Click on the three dots icon next to GTA V > Click on Uninstall.
• Complete the uninstallation process > Navigate to the C:\Program Files\Epic Games\GTA folder on your PC.
• Make sure to Delete all files and folders located there.
• Restart the Epic Games Launcher and Reinstall GTA V via your Library.
• Open the GTA V game to check for the Error Failed zlib call (ERR_GEN_ZLIB_2) if it’s troubling or not.

3. Contact Rockstar Support

If none of the methods worked for you then make sure to contact Rockstar Support for GTA V to submit a report. Just create a ticket to get a faster resolution.

That’s it, guys. We assume this guide was helpful to you. For further queries, you can comment below.