How to Fix ‘RPC Server is Unavailable Error’ in Windows [2021]

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How to Fix 'RPC Server is Unavailable Error' in Windows

If you use Windows frequently, you’re probably familiar with one of the most commonly seen and seemingly unexplainable error messages that ever pops up: “RPC Server is Unavailable.”

While this error can cause great confusion for inexperienced Windows users, it is not a serious or dangerous error, meaning that it won’t cause you to lose any data or programs. Fortunately, it’s easy enough to fix if you know what you are doing.

What is RPC Server

First, let’s talk about what RPC is in the first place to clear up some confusion and mystery. RPC stands for “remote procedure call,” and it is the method computers have used for decades to communicate with one another.

What makes things a little confusing is that with modern PCs multitasking and running multiple programs at once, RPC has become the method some applications use to communicate with other applications running on the same computer.

RPC is basically just a system that allows different processes to communicate with each other to perform tasks.

This works a bit like a network where the RPS server will open a port, communicate with the destination service or server, wait for a response, sends packets when there is a response, and then transfers the task data to the destination server or service.

The entire process operates in reverse when the destination service or server has done its job and has data to send back to the starting program.

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