For local development I often need Windows server and I use trial version. As six months came through, I need to buy or extend it. Of course, I prefer to extend 🙂

Open PowerShell as administrator and execute the command:

slmgr -rearm

To continue the trial for your Microsoft Office, you can use OSPPREARM.EXE
cd %SystemDrive%\Program Files (x86)\Microsoft Office\Office16
OSPPREARM.EXE