Acer notebook Vista cannot achieve mutual LAN access, please start from the following aspects:
1. Local connection → Right-click Properties → Cancel Internet Protocol version 6 to shorten the verification time.
2. Check whether the machine workgroup names are consistent.
3. Check whether the machine IP is in the same network segment, such as 192.168.1.X.
4. Set Network and Sharing Center → Network Connection → Customize → Location Type to Private to reduce protection.