Parallels Desktop cannot be started because of the error message:
The product license has expired. To continue using Parallels Desktop, you need to purchase a license renewal. If you have already done so, click Renew the License.
Clicking "Renew License" button does not resolve the issue.
Parallels Desktop > Activate Product menu is greyed out.
Incorrect permissions on Parallels Desktop files and folders.
Please contact Parallels Technical support.