The steps to prevent Minecraft 64 bit crashing with EXCEPTION_ACCESS_VIOLATION (0xc0000005) error are given below: Reinstall the Java Runtime Environment The Java installation is probably corrupted. You may have to uninstall and reinstall the same. Java is used by Minecraft and corruption of the Java files lead runtime errors. For Windows 8.1/ 8: 1. Press Windows Key + X. 2. Select Programs and Features. 3. Press F3 key. In the Search box on the top right corner, type “Java” 4. Right click “Java Runtime Environment” from the Search Results, select Uninstall option. 5. Follow the on-screen wizard and then reboot your PC. For Earlier Versions of Windows: 1. Click the Start button. 2. Select Control Panel. 3. Click Programs | Uninstall a program. 4. Refer Steps # 3-5 from Windows 8.1/ 8 user’s paragraph. Reinstall the Minecraft After reinstalling the Java program, reinstall the Minecraft as well. The process of re-installation is similar to that of Java. Disable User Account Control This error appears due to conflicts with the User Account Control (UAC), a security feature in Microsoft Windows. For Windows 8.1/ 8: 1. Press Windows Key. 2. Type “Control Panel” in the Search Box. 3. Click the Apps icon. 4. Open that from the Search Results. 5. Click User Accounts and Family Safety | User Accounts. 6. Click “Change User Account Control settings” link. 7. Move the slidebar to the extreme bottom, i.e. Never Notify. 8. Click the OK button. For Earlier Versions of Windows: 1. Click the Start button. 2. Type “Change user account control settings” in the Search Box. 3. Open that from the Search Results. 4. Refer Steps # 7-8 from Windows 8.1/ 8 user’s paragraph. Check Conflicts with the DEP Some of the program files are conflicting with the DEP feature in Windows. Add those program files to the Data Execution Prevention excluded files list as shown below: For Windows 8.1/ 8 and Earlier Versions: 1. Right click the Computer desktop icon. 2. Select Properties. 3. Click “Advanced system settings” link. 4. Click the Advanced tab. 5. Click Settings button under Performance. 6. Click Data Execution Prevention tab. 7. Select “Turn on DEP for all programs and services except those I select”. 8. Click the Add button. 9. Browse and add all the files from the following directory: C:\Program Files\Minecraft C:\Program Files (x86)\Minecraft C:\Users\UserName\AppData\Local\.Minecraft 10. Click OK | OK. Optimize Services and Clear Junk Files: To run game at its optimum performance it is important to turn off computer services and clean computer junk. Using PCFresher System Utilities perform services optimization and cleaning-out junk information. It may take a minute or two. This will help fixing corrupted files and prevent Minecraft crashes.