The article you linked is out of date. Xcode Server is now integrated directly into Xcode and OS X Server (now "macOS Server") is no longer required.
Here's an up-to-date tutorial on getting started with Xcode Server:
I don't think you want to expose your Xcode Server to ...
"Server.app" does not exist in Mac OS X Snow Leopard Server as the server aspects of the OS are integrated into the OS itself, as in everything came preinstalled. Below you'll see a screen shot of the Applications folder, with the Server folder selected and there is no "Server.app".
In Terminal using the following command, it did not find ...
The short answer, is do not install Big Sur on 2013 / 2014 MacBook Pro if you can wait. Stick with Catalina if you can and need it to be stable and supported.
Thank you for this post - I found myself in this exact situation, following the same "Apple recommended" procedure to perform a factory reset after already updating to Big Sur. I was left ...
I had the same error "Installation of macOS could not continue" while trying to install macOS 11 "Big Sur".
I had to install Catalina first (see the "Download macOS" section of this support article for instructions) and then the upgrade to Big Sur worked fine.
Server is a separate app from the OS, that you download from the Mac App Store. It will be listed in the Purchases of the AppleID that was used to buy it.
You could also copy the app from your backup, and it will create all the necessary folders from scratch. (You may want to copy over the contents of /Library/Server, and other files, to restore your server ...
I got the same problem,
I have local AD server on my local network. and I set also a DNS server in the same network.
I tried to set the administrator user as domain controller as mentioned in @Shareek answer which did not resolve the problem. besides I set the DNS of my connection the same as DNS of my AD Server and everything worked well