Extend Windows Server Trial
If you don’t have any days left on your evaluation and the rearm count isn’t 0, run the command below to extend the trial and then restart the server.
slmgr -rearm
Once the server has rebooted, you can check its status again to see if the rearm was successful. The -dli switch is like -dlv but provides less information.
Extend Windows Server trial period (Image Credit: Russell Smith)
