Troubleshooting: Fixing IntelliJ Not Opening After Updating to Java 17

Published on 2024.02.08

IntelliJ IDEA is a popular integrated development environment (IDE) for Java developers. However, sometimes users may encounter issues where IntelliJ fails to open after updating to Java 17. In this article, we will explore the possible causes for this problem and provide step-by-step solutions to fix it.

Possible Causes

  1. Incompatible Java version
  2. Missing or corrupted IntelliJ files
  3. Incorrect IntelliJ configuration

Solution 1: Verify Java Version

The first step is to ensure that you have the correct and compatible version of Java installed. Follow these steps:

  1. Open a terminal or command prompt
  2. Run the command java -version to check the installed Java version
  3. If the version is not Java 17, install the correct version from the official Oracle website

Solution 2: Clear IntelliJ Cache

Sometimes, cache files can cause issues with IntelliJ startup. To clear the cache, follow these steps:

  1. Close IntelliJ if it is running
  2. Locate the IntelliJ cache directory. On Windows, it is typically located at C:/Users/<username>/.IntelliJIdea<version>/system/caches
  3. Delete all the files and folders inside the cache directory
  4. Restart IntelliJ

Solution 3: Reset IntelliJ Configuration

If clearing the cache did not resolve the problem, resetting the IntelliJ configuration might help. Here's how to do it:

  1. Close IntelliJ if it is running
  2. Locate the IntelliJ configuration directory. On Windows, it is typically located at C:/Users/<username>/.IntelliJIdea<version>/config
  3. Rename the options directory to options_backup
  4. Restart IntelliJ

Conclusion

By following the above solutions, you should be able to fix the issue where IntelliJ fails to open after updating to Java 17. Remember to always make sure that you have the correct Java version and try clearing the cache or resetting the IntelliJ configuration if needed.