Troubleshooting 'java runtime out during minecraft 1.7.1' Errors with Java SE Development Kit 8

If you're experiencing errors like 'java runtime out' while trying to run Minecraft 1.7.1 or any other Java-based applications on your Windows system, it's likely due to issues related to the installed version of Java Runtime Environment (JRE) or its compatibility.

To resolve these problems and ensure smooth operation with newer versions of Minecraft and other Java programs, consider updating or reinstalling Java SE Development Kit 8. This article will guide you through troubleshooting steps for 'java runtime out during minecraft 1.7.1' errors by focusing on resolving registry key conflicts between different JRE versions.

## Symptoms

- Error messages like 'java.lang.RuntimeException: java.io.IOException: Registry key Software/JavaSoft/Java Runtime Environment CurrentVersion has value , but 1.8 is required' or similar variations.

- Application crashes or freezing during startup or runtime with Java-based applications, including Minecraft 1.7.1.

## Causes

These symptoms are often caused by:

1. Conflicting versions of JRE installed on your system, where newer versions (like version 1.8) conflict with older ones required by the application.

2. Registry entries left behind from previously uninstalled or corrupted Java installations that interfere with current configurations.

## Resolution Steps

### Step 1: Uninstall All Versions of Java and Its Related Components

- Go to Control Panel > Programs & Features (in Windows Vista/7) or Control Panel > Programs & Features (in Windows 8/10).

- Look for all entries related to 'Java', including:

* Oracle Java SE Development Kit 'version'

* Oracle Java Runtime Environment 'version'

* Oracle Java Update Helper

* Java(TM) Archive's' and their respective versions.

- Select them one by one, then click Uninstall/Unistall/Remove above each entry. Follow the uninstallation wizard's instructions to complete removal.

### Step 2: Reset Registry Keys (Optional but Recommended)

If after step 1 you still encounter issues or receive 'Registry key not found' errors during Java installation:

- Press Windows + R keys on your keyboard, then type 'regedit' and press Enter.

- In the Registry Editor:

* Navigate to HKEY_CLASSES_ROOT\Java\Preferences

* Look for entries under each subfolder named like '._' (for example: .1.8_45).

* Right-click these folders and select Delete, then click Yes when prompted.

### Step 3: Download & Install Java SE Development Kit 8

- Go to the official Oracle website at 'https://www.oracle.com/technetwork/java/javase/jdk8downloads.html'(https://www oracle com technetwork java jdk downloads html).

- Select and download the correct 'Java SE Development Kit' (not just JRE) for your operating system architecture (32-bit or 64-bit depending on whether you're running a 32-bit or 64-bit version of Windows).

### Step 4: Reinstall Java with Elevated Privileges

- Double-click the downloaded .exe file to start installation.

- If prompted, choose 'Yes' to proceed with User Account Control (UAC) permission requests and/or elevated privileges.

After following these steps, your system should now have a clean slate for installing or updating Java. Make sure that you've uninstalled all previous versions of JRE completely before reinstalling only the latest version recommended by Minecraft 1.7.1's developers (which is likely Java SE Development Kit 8). If errors persist after attempting these troubleshooting measures, consider seeking further assistance from a qualified IT professional or reaching out to Oracle support for additional guidance.

Remember that running multiple versions of JRE side-by-side can lead to compatibility issues and crashes like the ones you've experienced. Whenever possible, stick with the latest supported version recommended by your applications' developers to ensure smooth operation without encountering such problems again.

Java runtime out during minecraft 1.7.1