How to fix “Error downloading file, file content is different” error in Minecraft

How to fix “Error downloading file, file content is different” error in Minecraft

The “Error downloading the file, the content differs from what was expected” bug in minecraft can really disturb your mood. When this happens, you cannot access the game to explore the dungeons that you had planned to explore or mine for hours in your virtual world.

We will go through different solutions to help you fix the problem if your Minecraft launcher is also unable to download the file.

1. Listen to what the error message says

Consider feeding the Minecraft launcher what you’re asking for before implementing any other solutions. As the error window indicates, the content of the file on disk is different from what the launcher expected, so manually downloading and adding the requested file may solve the problem.

Since the error message also specifies the URL from which the file should be downloaded and the location on your hard drive where you should add it, that makes your job much easier.

Before downloading the file and replacing it, copy the error message to a separate file to copy the paths as you download and paste the file. Then follow these steps:

  1. Copy the destination URL mentioned below, paste it into any web browser and let the file download automatically.
  2. Copy the downloaded file and navigate to the File Explorer path specified in the error message:
  3. Delete the file called jopt-simple-4.5.jar and paste the downloaded one in its place.


When replacing the file, restart the launcher to verify that the error has been resolved. If not, unzip the downloaded file to the same folder you pasted it to earlier. If the error persists, let the copied file be placed in the directory and implement the fixes below.

2. Change the preference for opening files with the .JAR extension

A Java runtime environment is required to open .JAR files. You must set the appropriate file open preference so that Java executes all classes and resources in a .JAR file in a single request.

The files will not run if any other application is set as default to open these files. This incorrect execution may also be responsible for the error under discussion.

To change it, follow these steps:

  1. Anger C: > Users > %username% > AppData > Roaming
  2. navigate to .Minecraft.
  3. Right click on any file with .JAR extension and select Properties. (In this case, we are changing the file open preference using a .JAR file in the accessories file).
  4. Just beside open withclick on the Change button.
  5. Select the Java (or JDK) to open those file extensions.

If you prefer, you can repeat the same process for any other files with the .JAR extension to modify the file’s opening preferences. However, you can skip this step if the file extension is already set to open in your desired file opening preference.

3. Rule out corrupt mod issues

If you are a powerful Minecraft player who doesn’t hesitate to try every new Minecraft mod you come across, a corrupt mod file can also lead to this problem. To rule this out, follow these simple steps:

  1. Navigate to the following path:
  2. Copy the modifications folder and paste it somewhere else.
  3. delete original modifications game files folder.
  4. Rerun the Minecraft launcher.

If deleting the mods folder resolves the issue, one of the mods is corrupted. First, you need to remove the mod you recently added. After that, you need to run the launcher again to see if the issue is resolved.

The corrupted mod still resides in the game files when the issue persists. The best way to find the culprit is to delete all mod files from the mods folder one by one and run the launcher repeatedly. Filter and remove the offensive mod permanently, and you’re done.

If removing all mods doesn’t work, please continue to implement the fixes below.

If you are primarily using a non-vanilla launcher with mods applied, the launcher itself is most likely causing the problem. So locate the folder where the non-vanilla launcher is installed and delete it along with all its associated files. After that, launch the vanilla launcher.

You should abandon non-standard launchers and permanently switch to the standard launcher if launching with a standard launcher resolves the issue.

5. Whitelist the Minecraft Launcher in Microsoft Defender Firewall

Microsoft Defender Firewall could also be causing this error as it can prevent the launcher from downloading files correctly. So whitelisting Minecraft in the Firewall settings (allowing the app through the Firewall) has a good chance of solving the problem.

Follow the steps below to do so:

  1. Right click on Windows Start button and go to Settings.
  2. Anger Update and security.
  3. Click on windows security in the left sidebar.
  4. Anger Firewall and network protection in the right panel.

  5. Click on Allow an app through the firewall in the right panel.
  6. Click on the change settings and then hit Allow another app… button.
  7. Click on Surf and search for the Minecraft launcher app.
  8. Then click Add.

  9. Check the boxes to Private Y Public.
  10. Paste OKAY.

If you want, you can also temporarily disable Microsoft Defender Firewall. Try running the launcher again to see if it downloads the file this time. If the error persists, reinstalling Minecraft is the best option.

6. Reinstall Minecraft

Since you must remove the existing installation before reinstalling Minecraft, copy the Save game files folder and save it somewhere else to avoid losing your progress. Then open Windows Control Panelclick on Programs and characteristicslocate the Platform Minecraftright click on it and select uninstall.

then go to C: > Users > %username% > AppData > Roaming and remove the “.Minecraft” file. Then take a copy of Minecraft from the official website and install it on your computer.

Don’t forget to copy the Save folder back to the exact location on a fresh install so you can continue playing while keeping your previous progress.

7. Make sure the problem is not from Minecraft or report the problem to Minecraft

If the problem persists after applying all the fixes mentioned above, it is possible that the problem originates from the Minecraft backend. To confirm this, go to the Minecraft bug reporting tool and consult the most recent cases reported.

Whenever you find multiple reports related to the same issue, you should wait until Minecraft automatically resolves it. If you’re the only one with this problem, report it and listen to what they say.

Re-explore your Minecraft world

By applying the above fixes, you should be able to fix the “Error downloading the file, the content differs from what was expected” error in minecraft If the problem persists, consider rolling back to a previous version of the game.

Even if that doesn’t solve the problem, let the Minecraft launcher rest for a while and play Minecraft Classic on the web. Although it has several limitations, it is a good alternative if you are eager to play.

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