Problem is simple:

One of my child cannot play online multiplayer because of "parental control restriction". Simple and rather common. But: the other can. They have the same devices with the same firmware, the same Minecraft for Nintendo Switch version and the same XBox Live / Microsoft account privacy and safety settings. The same...

It works on one account and on the other it doesn't.

It worked smoothly for 2 months (February - April) and now it has stopped. Before that, both played without any problems. No permission changing, just automatic firmware / software updates.

 

As I said everything is the same:

1. Two the same consoles - Nintendo Switch updated to v8.0.0
2. The same WiFi network with the same gateway and the same NAT type (B)
3. The same XBox Live / Microsoft account privacy and safety settings (Privacy & online safety on account.xbox.com webpage - tabs Privacy, Xbox One/Windows 10 Online Safety, Xbox 360 Online Safety - current parameters of both accounts below)
4. The same Nintendo account parental control settings.

 

Below is a list of what I tried and what didn't help solve the problem:

1. Change permissions on XBox Live / Microsoft Account - Privacy, Xbox One/Windows 10 Online Safety, Xbox 360 Online Safety - block and allow again. Checked - didn't work.
2. Logout and login on Minecraft for Nintendo Switch with the same account. Checked - didn't work.
3. Remove from Minecraft for Nintendo Switch and add again the same XBox Live / Microsoft Account (Settings -> Profile -> Clear Account Sign in Data). Checked - didn't work.
4. Create and attach new account dedicated only for Minecraft for Nintendo Switch. Checked - didn't work.
5. Complete Minecraft for Nintendo Switch reinstall (with Nintendo Switch save data remove and both old and new account verification).  Checked - didn't work.
6. Logging on with working XBox Live / Microsoft Account on the other console, which still communicate "parental control restriction". Of course, before that, logging out on the second console. Checked - didn't work. Again: "parental control restriction". WHAT? Why does it work on the other console? (I personally think it's the best ).

After this test, I restored the original accounts and wrote this report.

 

So I tested:

1. Network issues (most common problems),
2. Software issues (save or login data could be corrupted),
3. Account permissions and privacy settings issues (possible limitations of the privileges).

And nothing helps. Still the same problem and message: "parental control restriction".

I cannot find any solution. Microsoft also cannot find any - they tried to help me through remote support channel.

What is wrong with this software that only it causes so many problems? By setting up an online account I tried to get around the problem of playing on the local network. It worked for 2 months...

 

Kids play a lot of this game, that's why I put so much effort into restoring the functionality they've benefited from. 

I'm asking for your help in solving this really weird issue.

 

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Below are list of current permissions - the same on both accounts and only one of them works:

Privacy settings:

 

Xbox One/Windows 10 Online Safety settings: