The JDK version does not match: Eclipse needs to be compatible with the installed JDK version. If the JDK version is too high or too low, it may cause Eclipse to fail to run.
Errors in setting system environment variables: Eclipse requires correct system environment variable settings including JAVA_HOME and PATH, if these variables are set incorrectly, it may cause Eclipse to not start.
Error in Eclipse configuration: Occasionally, Eclipse’s configuration file may become corrupted or incorrectly modified, which can result in Eclipse not functioning properly.
Insufficient memory: If your computer doesn’t have enough memory, it can cause Eclipse to either not run or run slowly.
Plug-in conflict: Sometimes, installed plug-ins may be incompatible with the Eclipse version or conflict with each other, which can lead to Eclipse not functioning properly.
Virus infection: When a computer is infected by a virus, it can damage system files and impact the normal operation of Eclipse.
Other reasons: There are also several other factors that may cause Eclipse to not run, such as hardware failures, operating system issues, etc. If encountering problems with running Eclipse, you can try reinstalling it or seek help in community or forums.