本文主要讲述了在Windows 7系统上安装Java 8 Update 73（64位离线版）时遇到的问题，以及作者通过禁用Java浏览器内容成功解决的经验。作者尝试了卸载旧版本、管理员权限运行、清理注册表和目录等常规方法均告失败。最终，通过禁用Java控制面板中的“启用Java内容在浏览器中”选项，成功安装了Java。文章还提到了其他可能的解决方案，并建议遇到类似问题的用户参考相关资料。

💡问题描述：作者在Windows 7上安装Java 8 Update 73（64位离线版）时，遇到了安装失败的问题，错误代码为1603。

❌尝试过的解决方法：作者尝试了卸载旧版本、以管理员身份运行安装程序、清理目录和注册表、重启系统、尝试旧版本等方法，但均未解决问题。

✅解决方案：通过Java控制面板禁用“启用Java内容在浏览器中”选项，然后重新运行64位Java安装程序。安装完成后，重新启用该选项。

📌其他建议：文章还提到了其他可能的解决方案，例如检查Java知识库中提供的基本解决方法。如果“启用Java内容在浏览器中”选项已取消选中，可以先选中它，应用更改，然后再取消选中。

3 Billion Devices Run Java.

Unfortunately (or fortunately depending on how you look at it) my workstation isn’t one of them.

I’m no stranger to Java and I’m more than willing to share my bitter experiences with it but rarely does my dissatisfaction stem from the installation process itself (that is if you don’t count the update frequency). This blog post is for my future self as I’m bound to run into it again.

I encountered a never before seen by me problem installing the Windows Offline (64-bit) version of Java Version 8 Update 73 on Windows 7.

Java Update did not complete

Error Code: 1603

The usual tricks did not work. Uninstalling the old version first. Run as administrator. Directory and registry scrubbing. System reboot. Trying an older version. In fact all version 8 builds exhibited this behavior. It wasn’t until I rolled all the way back to a version 7 build that the installation was successful.

For posterity, this spiceworks thread covers a lot of ground; there seems to be a variety of fixes for an equal number of root causes which all yield the same Java installation failure. The Java knowledgebase covering this issue offers some basic workarounds under Option 1 such as a system reboot, offline installer, uninstalling old versions, all of which I had already tried without success.

The fix in my particular instance was Option 2: Disable Java content (in the web browser) through the Java Control Panel. You’ll find the Java applet in the Windows Control Panel when a 32-bit version of Java is installed.

On the Security tab, temporarily deselect the “Enable Java content in the browser” checkbox.

Complete the 64-bit version of Java installation (launch the installer using “Run as Administrator“) and don’t forget to “Enable Java content in the browser” when finished.

Update 5-12-16: If you’re receiving this error and “Enable Java content in the browser” is already deselected, check the box, Apply, OK, uncheck the box, Apply, OK.