Use mvn clean install -U to force Maven to check for updated releases and snapshots from remote repositories.
A corrupt download can cause "Invalid ZIP" or "Class Not Found" errors even if the file exists on your disk. Forcing a Refresh: not able to download jar from maven repository
If the JAR is hosted on a private or third-party repository (like JCenter or a company-specific Nexus), you must explicitly declare that repository in your pom.xml or settings.xml . Use mvn clean install -U to force Maven
Sometimes the problem isn't the network, but how the dependency is requested in your pom.xml . not able to download jar from maven repository
If a previous download was interrupted, Maven may leave behind "lastUpdated" files or partial JARs, preventing it from attempting a fresh download.