Hello RussellL2, We have reset the Parallels Desktop license key. kindly try to activate it. If the issue still persists, please execute the following command with Terminal < prlsrvctl activate-license-online >.I am having the same issue with Parallels Desktop 10. I have done the Terminal command but still receive the 'Maximum Activations' error message. I am reinstalling after a hard drive failure. Can you help?