I really don’t like system administration.
I ran into an odd issue today with Windows Printer Sharing. My parents have a desktop with a USB-connected printer, as well as a laptop. I could connect the laptop to the shared printer just fine and print to it. However, whenever I would restart the laptop, I would get “The RPC server is unavailable” or “Access is denied” when trying to print again. After a lot of searching and checking the typical firewall and services settings, I discovered that the computers were simply in different workgroups. Once I changed the workgroup on the laptop to match the desktop, things worked perfectly.
Thought I’d post this in case anyone else on the Interweb has the same issue.
Ian Lotinsky 
Tks for your post. I had tried to star and stop many service on system, install many program… but the problem stop when read you post
You’re welcome, Nhang! It was a frustrating problem to solve, so I’m glad my post has been able to help others.