The RPC Server is unavailable

Print Spooler service not running

There’s currently a known print spooler vulnerability where IT may inactivate the print spooler to reduce the possibility of hacking. This may also come up as Error 1722.

Note: RPC stands for Remote Procedure Call. It's a used to request a service from another program that may be on another computer or network.

 NOTE: This is entirely up to the organization's IT group to work out. 

1. Identify where the Print Spooler is being used in your network.
2. Map your network to find the machined that must use the Print Spooler.
3. Disable the Print Spooler on the machines that don't use it.
4. For machines that require the Print Spooler, configure them in a way to minimize its attack surface.

In Windows:

1. Open Control Panel, Administrative Tools, Services.
2. Find Print Spooler as a service, click to highlight it and click start button.