Error: ‘Category does not exist’ when viewing IIS Worker Processes in IIS Manager

I encountered an issue a while ago while using the new Worker Processes feature in IIS Manager: Error: When you open the Worker process, you may encounter this error ‘Category does not exist‘ Solution: To fix this problem, simply enable the [PerfProc] Performance counter by running the following command from an elevated command prompt: lodctr /e:PerfProc