To install JRE 1.8 (Java 8) on Windows 10, first confirm that your application requires Java 8 and whether it needs the 32-bit x86 or 64-bit x64 runtime. Then download the matching Windows installer from Oracle’s official Java Downloads page, run it, and verify the installation with java -version. Oracle listed JRE 8u503 when checked on October 7, 2026, but the reviewed information does not confirm Windows 10 support for that update; check Oracle’s compatibility information and your application’s requirements before installing.
Before installing JRE 1.8
Check the application’s documentation for the Java version and architecture it requires. A 64-bit Windows installation does not necessarily mean an older application can use 64-bit Java.
| Package | Use it when |
|---|---|
| Windows x86 (32-bit) online installer | The application needs 32-bit Java and you want a small installer that downloads additional files during setup. |
| Windows x86 (32-bit) offline installer | The application needs 32-bit Java and you want an installer that contains the files needed for setup. |
| Windows x64 (64-bit) installer | The application specifically needs 64-bit Java; Oracle’s installer contains the files needed for setup. |
Oracle’s JRE 8 installation guide explains that the x86 online installer downloads additional files based on system configuration, while the x86 offline and 64-bit installers contain everything needed to install the JRE. The Oracle download page listed JRE 8u503 at the time of research. Package names, versions, and availability can change, so check the current page before downloading.
Review the license terms associated with the package you select, especially for commercial or organizational use. Oracle’s current JRE 8 download page identifies its applicable license; do not assume every JRE 8 package is free for every use.
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1. Download Java 8 for Windows
- Open Oracle’s Java Downloads page.
- Find the JRE 8 Windows downloads and confirm the listed version and applicable license.
- Choose the x86 or x64 installer that matches the application’s requirement. For an x86 installer, choose online or offline based on whether you want setup to download additional files.
- Download the installer from Oracle, not a third-party mirror.
2. Run the Java 8 installer
- Open File Explorer and go to the folder where you saved the installer.
- Run the downloaded .exe file.
- If Windows asks for permission, allow the installer to make changes.
- Follow the installer prompts and wait for setup to finish.
Oracle documents the default JRE installation folders as C:\Program Files (x86)\Java\jreN for x86 and C:\Program Files\Java\jreN for x64. The folder name depends on the installed release.
3. Check whether Java is installed
Open a new Command Prompt and run:
java -version
The output should identify a Java 8 runtime, commonly with a version beginning 1.8.0. The exact update number varies. This command is a practical check that Windows can invoke Java; Oracle’s JRE installation guide does not specify it as a required verification step.
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What to do if java -version fails
“Java is not recognized”
Check that the intended JRE is installed and that the JRE’s bin directory is on the command search path. Oracle’s guide says to configure PATH to include JAVA_HOME\bin to register the public JRE. Confirm the actual installation folder on your computer rather than copying a path blindly.
The application still cannot find Java
Confirm the application’s required Java architecture and version. A 32-bit application may require the x86 JRE even on 64-bit Windows. If the application has its own Java configuration, check that it points to the JRE you installed.
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1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsFAQ
How do I install Java 8 on Windows 10?
Confirm your application’s Java and architecture requirements, download the corresponding JRE 8 Windows installer from Oracle, run it, and check the result with java -version. Verify Windows 10 compatibility for the specific package before proceeding.
Which Java 8 installer do I need, 32-bit or 64-bit?
Choose the architecture required by the application. A 64-bit version of Windows does not establish that an older application can use a 64-bit JRE.
What is the difference between the online and offline x86 installer?
Oracle describes the x86 online installer as a small program that downloads more installer files based on system configuration. The x86 offline installer and 64-bit installers contain the files needed to install the JRE.
How can I check whether Java is installed?
Open a new Command Prompt and run java -version. If Windows cannot find the command, check the JRE installation and whether its bin directory is included in PATH.
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