adb cant connect with a no auth error

[chenjianquan7]

when i connect adb ,i return me a error ,no auth
how cound i connect adb,thank you

[froggyn]

You need to set up the android adb key from your client on the emulator
On your machine

1. Copy what is in .andoird/adbkey.pub (On your host/clientmachine)
   (Note on Windows it would be C:\Users\${USER}\.android\adbkey.pub)

Inside the Emulator
2. Paste the key from above into /data/misc/adb/adb_keys
3. Run chmod 0644 /data/misc/adb/adb_keys to change permissions for the file
4. If you havent already restart the adb daemon (by Ctrl+C the existing process and running adbd) on the emulator

You should be good to go
See: https://old.reddit.com/r/BlissOS/comments/tkddmn/adbovertcp_failed_to_authenticate/