Local LAN does not autodetect

This issue is a cause with the client not being able to detect the server. The server appears to be broadcasting itself fine as the workaround only need be applied to clients connecting from other PCs. LAN connections worked fine in 1.16.5, but stopped working with 1.17.0.  Running windows 10 home.

The workaround I've found for this issue is to install OpenJDK 16 and set the client to use javaw.exe:

1. open minecraft lanucher

2. select Installations tab

3. edit Latest Release

4. expand More Options

5. under Java Executable, click browse

6. select javaw.exe, which is found at C:\java\jdk-16.0.1\bin\javaw.exe in my case

7. save and launch

8. select multiplayer

9. lan server now shows in list

Thank you, Tim! Your comment helped and more importantly - it worked. 

We have two PCs in the house, playing on LAN together. We had to do this on both of them and then it worked.

Thank you for your report!
We're tracking this issue in MC-98598, so this ticket is being resolved and linked as a duplicate.

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Hi, I'm having trouble with the same issue but am unable to locate the javaw.exe file. Can anyone help?

Nevemind, I just realised you said download it, apologies!

Still having trouble locating it!

Depends on where you put it when you install it. Here's some instructions or search for "how to install openjdk 16" https://java.tutorials24x7.com/blog/how-to-install-openjdk-16-on-windows

i installed openjdk 16 but in my command prompt it doesn't show that its recognizing openjdk, I followed every step