Some people like to shoot off their mouth without actually paying attention (perhaps because they themselves are "bovine" minded). This is what was actually said…
Let me break this down – IF you normally log into a Windows 10/11 PC with a MICROSOFT ACCOUNT, when you go to log into that machine from a remote Windows PC using Microsoft’s Remote Desktop, the log in credentials will need to be the Microsoft Account credentials you use as the normal credentials for said PC.
I know this, because I use Remote Desktop from a "Window" PC. It's also explained in step #3 of Brink tutorial -
Use Remote Desktop to Connect to Windows 11 PC Tutorial. I don't care what Linux does. Linux wasn't the question. We're talking about
Windows. Additionally, the OP never mentioned the version of Windows they are running (and still hasn't) outside of "11".
Bye.
The same is true if you log in with a local account. You need same account on both.
I have found W11 is temperamental and even if you have same account on both devices, it often comes up with "enter your credentials" screen but still refuses to connect even though you know you have entered correct details.
I have found you sometimes have to manually enter credentials using the Credential Manager. Never needed to do this with W10.
As far I can tell, Credentials Manager does not actually differentiate between MS account or local account - it is just a name and a password. Password cannot be a null password though for RDP.
I rather think @Jimbo misinterpreted your statement "With that I'll say if you log into Windows with a Microsoft account, you will need to use those credential to RDP to it" as meaning you NEED an MS account which when I read it, I can see how one could interpret it as meaning that, even though I am sure you did not mean that.
Equally, I think you may have slightly misinterpreted @Jimbo's intent of his reply when he said "You absolutely DO NOT need a Ms account to RDP into Windows (this is true BUT you do need same account (local or MS) on both devices which was not specifically stated by him).
However, @Jimbo could have been more subtle in his reply but bear in mind he is Skandinavian, and I know from years of working in Denmark, Norway and even a bit in Sweden that culturally, things are black or white and shades of grey do not exist, and they often come over as blunt, particularly when expressing in English (and my Skandinavian friends all agree that subtlety is not a Scandinavian trait LOL).
I will give an example. I was in a meeting with Brit's and Danes, and when meeting finished, I said to organiser of next back to back meeting "I am rather busy - am I needed at next meeting?"
The organiser said "No" and nothing else. The Brits all fell about laughing, and the Danes looked on puzzled at laughter. My reply was a bemused "I'll take that as a no then!".
We had to explain that the simple reply "No" meant I was insignificant and not needed at all regardless of any consideration of my input/skills etc. A British organiser would have subtly replied "No, I do not think so, but I will call you if we do need you". I would have then replied "Thanks - see you later (Tak - vi ses senere)"
Equally in Japan, I made the dreaded faux pas of putting a Japanese person's business card into my pocket without reading it, and asking even a benign question e.g. "how many people in your department" and that was tantamount to ignoring the person!