If you encounter issues with XML license files, check the following:
Even with best practices, things go wrong. Here is the diagnostic checklist. manageengine servicedesk plus license xml best
Open a command prompt as and navigate to the [ServiceDeskHome]\bin directory. Execute the run.bat command. If you encounter issues with XML license files,
To manage your license efficiently, you must use the XML license file provided by ManageEngine after purchase . This file contains your specific subscription details, including company name, edition, and technician seat count. How to Apply the License XML Execute the run
When prompted that the registration period has expired, click and browse for the XML file. Key License Reports & Tracking
Managing the ManageEngine ServiceDesk Plus License: Best Practices and Technical Guide
A popup will appear stating the "Registration Period has expired." Click to open a window where you can browse and select your new license XML file.