You need to restart a server from remote and do not have terminal services active.
This is by design, windows need a reboot from time to time.
You can use the shutdown command from a client to restart your server.
shutdown -r -f -c "CU later" -m \servername
If you would like a GUI interface you can use the
command and will be presented with a nice graphical interface.
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.