How To Fix “CannotResolveClassException: kg.apc.jmeter.threads.UltimateThreadGroup”

If you are facing the afore-mentioned issue while trying to open a JMX file on JMeter, you are in the right place. Let’s investigate and solve the issue together. If you are familiar with Java language, you may know that “CannotResolveClassException” errors usually indicate that something in your code/project is missing and your application doesn’t know what to do about that. “ CannotResolveClassException: kg.apc.jmeter.threads.UltimateThreadGroup ” error occurs when your script contains an Ultimate Thread Group element, but your JMeter setup doesn’t have a proper Ultimate Thread Group element installed. You may think that installing the relevant plugin from [...]