Yeah, I know, most of you know how to do that. But I bet that most of you need to look into documentation. Why? Because it’s not usual. So, why not describe it again… Learning by writing, that’s my point. Backup your database. I don’t even call it “first” because it must be obvious for all WordPress developers. Of course you don’t need to do that if you have fresh WordPress installation. Then enable prettylinks and see if it works. Multisite may need it. So… when obvious is done, let’s go to the process. First, we need to deactivate all your plugins. You may activate it after network is enabled…