A Java Exception Has Occurred Error on Windows 11 / 10 /8/7 - How To Fix Cannot Open .jar files ✅ @VictorExplains

Uploaded June 2025 | Updated September 2026, 2 weeks ago

👉 Are you seeing the error message "A Java Exception Has Occurred" when trying to open or run a Java-based program? In this step-by-step guide, I’ll show you how to fix / Solve the "A Java Exception Has Occurred" error in Windows 11, 10, 8, or 7.

This issue often happens when trying to launch .jar files or Java applications. Whether you’re a developer, gamer, or casual user, this solution works for many popular programs.

✅ Programs That May Show This Error:
Minecraft, Technic Launcher, TLauncher, Eclipse IDE, IntelliJ IDEA, NetBeans, JAR files, Forge Mod Loader, OptiFine, JDownloader, Logisim, BlueJ, RSBot, Apache Tomcat, Cheat Engine Java builds, Android Studio, Runescape bots, JAR Executables, Arduino IDE, Jitsi, Java-based custom apps.

✅ What You’ll Learn:

How to fix "A Java Exception Has Occurred"

How to install or reinstall Java JDK

Open .jar files properly on Windows.

📂 Download Link :

oracle.com/java/technologies/downloads

⏱ Timestamps / Chapters
0:00 – Intro
0:10 - How To Solve Java Exception Has Occurred Error During Open Jar File in Windows 10 / 11 / 8 / 7
0:53 - Try To Select The Latest JDK Version
1:33 - in Some Cases must restart for these changes to take effect
1:38 - More Suggested Videos

📺 More Related Videos
▶️ Windows 11 Tutorials: youtube.com/playlist?list=PLFStktVg2e4lzGCbhRYBPhCB8vFncdToj
▶️ Windows 10 Tutorials: youtube.com/playlist?list=PLFStktVg2e4leA44bjCdxOg4u4sGB1ZGQ
▶️ FRP Bypass & Android Tips: youtube.com/playlist?list=PLFStktVg2e4l01Lfzp21cN2nsbEPQbgxx
▶️ Android Tips & Tricks: youtube.com/playlist?list=PLFStktVg2e4k1nDcW-QlR40wM8iJB0OFi

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📢 Disclaimer
This video is for educational purposes only. Copyright Disclaimer under Section 107 of the Copyright Act 1976 allows for “fair use” for teaching, comment, research, and more.

🔍 Hashtags
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