Probably being a Windows user you must be familiar with the seemingly most common error message: “RPC Server is Unavailable,” which restricts users from accessing certain files. For novice users who have no networking knowledge, the RPC server’s unavailable error message creates a lot of panics. The good news is the error message is neither dangerous nor does it make you lose data.
Thankfully, fixing it is very easy and this is what we are going to learn in this tutorial.
Article source: https://www.systweak.com/blogs/how-to-solve-rpc-server-is-unavailable-in-windows/