It is unfortunate Mojang didn't provide further solutions for this issue. Though I haven't tried these myself, below is a compiled list of solutions that was stated "worked" by users posted on Minecraft forums (Reddit, MCForum, Discord, etc). Here is the list:
In Windows Defender Firewall with Advanced Security, ensure that in all inbound "OpenJDK Platform Binary" rules, under the "Advanced" tab in the Properties window, "Private", "Public" and "Domain" are ticked (sometimes having "Private" ticked only also solves the issue). Additionally, change all "blocked" rules of that list to "allowed".
Stop using JDK binaries provided by the official Minecraft Launcher. The recommended JDK is either Adoptium or AdoptOpenJDK. Download the one that suits the required Java version for the Minecraft version. The downside of this method is you have to set Java binaries for each individual installation, which can be found under <Java installation path>\bin\javaw.exe.
Many users have faced this issue because of router config problems (that may conflict with Minecraft Multiplayer itself). Either replace your router, cable, factory reset the router to mitigate this issue, or you can use a DNS over HTTPS client like 1.1.1.1 or a VPN like ProtonVPN to skip through all the complicated stuff.
Whitelist your Java installation folder and/or binary in your antivirus or Windows Defender.
Use java.exe instead of javaw.exe (remember that any JDK can use this method). javaw.exe is the non-console Java binary. A command prompt window (or terminal in other OSes) will appear when you use this method. Don't close that window unless you want to close the game.
Maintain a low render distance value (or low graphics settings). Sometimes this can improve your connection reset problems.
Flush the DNS using the steps given by the moderators above. This method is not guaranteed always to work, but it was reported to work temporarily.
If you are using a NAT-VPN application like Hamachi to allow your friend to play via "Open to LAN" in single-player worlds without having to be on the same network, completely uninstall it immediately. It can interfere with the network and cause network problems.
The new launcher from the Microsoft Store is such garbage because it breaks things. Uninstall it and download the launcher for Windows 7/8 on Mojang's website (also works on Windows 10).
I won't be responsible for any errors or losses you have if you follow the above methods. Consider them provided "as-is". You should consult an expert if you don't know what you're doing.
Nguyen Duc Minh
It is unfortunate Mojang didn't provide further solutions for this issue. Though I haven't tried these myself, below is a compiled list of solutions that was stated "worked" by users posted on Minecraft forums (Reddit, MCForum, Discord, etc). Here is the list:
In Windows Defender Firewall with Advanced Security, ensure that in all inbound "OpenJDK Platform Binary" rules, under the "Advanced" tab in the Properties window, "Private", "Public" and "Domain" are ticked (sometimes having "Private" ticked only also solves the issue). Additionally, change all "blocked" rules of that list to "allowed".
Stop using JDK binaries provided by the official Minecraft Launcher. The recommended JDK is either Adoptium or AdoptOpenJDK. Download the one that suits the required Java version for the Minecraft version. The downside of this method is you have to set Java binaries for each individual installation, which can be found under
<Java installation path>\bin\javaw.exe.Many users have faced this issue because of router config problems (that may conflict with Minecraft Multiplayer itself). Either replace your router, cable, factory reset the router to mitigate this issue, or you can use a DNS over HTTPS client like 1.1.1.1 or a VPN like ProtonVPN to skip through all the complicated stuff.
Whitelist your Java installation folder and/or binary in your antivirus or Windows Defender.
Use java.exe instead of javaw.exe (remember that any JDK can use this method). javaw.exe is the non-console Java binary. A command prompt window (or terminal in other OSes) will appear when you use this method. Don't close that window unless you want to close the game.
Maintain a low render distance value (or low graphics settings). Sometimes this can improve your connection reset problems.
Flush the DNS using the steps given by the moderators above. This method is not guaranteed always to work, but it was reported to work temporarily.
If you are using a network card for network connection, switching to the motherboard may help mitigate the issue.
If you are using a NAT-VPN application like Hamachi to allow your friend to play via "Open to LAN" in single-player worlds without having to be on the same network, completely uninstall it immediately. It can interfere with the network and cause network problems.
Make Windows prefer to use IPv4 instead of IPv6.
Uninstall all resource packs and disallow servers to download and automatically load them too.
Make your computer's IP static and set up the correct port favored by Java Edition.
The new launcher from the Microsoft Store is such garbage because it breaks things. Uninstall it and download the launcher for Windows 7/8 on Mojang's website (also works on Windows 10).
I won't be responsible for any errors or losses you have if you follow the above methods. Consider them provided "as-is". You should consult an expert if you don't know what you're doing.