两台Windows 7设备无IP互访及联网异常问题求助

Hey there, let's work through your problem with the two Windows 7 machines (Professional and Ultimate). You've got two main headaches: file sharing still asking for passwords even with password-protected sharing turned off, and losing internet access when setting static IPs. Here's how to resolve both step by step:

1. Stop the Password Prompt for File Sharing #

Even with "Turn off password protected sharing" enabled, a few common settings can still trigger that annoying prompt:

• Make sure both machines are in the same workgroup
  Right-click Computer → Properties → Change settings (under "Computer name, domain, and workgroup settings") → Computer Name tab → Change.... Double-check both devices use the same workgroup name (default is WORKGROUP; update it if needed and restart both machines).

• Tweak local user account permissions

  • Open Computer Management (right-click Computer → Manage) → Local Users and Groups → Users. Enable the Guest account by double-clicking it and unchecking "Account is disabled."
  • If you're using a regular user account to access shares, ensure the exact same username and password exist on both machines. Mismatched accounts can bypass the "no password" setting.
  • For your shared folder/drive: Right-click → Properties → Sharing tab → Advanced Sharing → Permissions. Add Everyone (or your specific user account) and grant them Read (or Read/Write) permissions.

• Adjust Windows Firewall rules
  Temporarily disable the Windows Firewall on both machines to test if it's blocking access. If sharing works after disabling, re-enable the firewall and add exceptions:
  Go to Control Panel → Windows Firewall → Advanced settings. Enable all inbound and outbound rules under "File and Printer Sharing."

• Registry tweak (last resort)
  Open regedit (press Win+R, type regedit, hit Enter) and navigate to:
  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

  • Set restrictanonymous to 0 (DWORD value)
  • Set restrictanonymoussam to 0 (DWORD value)
    Restart your machine after making these changes. Note: Always back up the registry before editing.

2. Restore Internet Access with Static IPs #

Losing internet after setting static IPs almost always comes down to incorrect network configuration:

• Verify your static IP settings
  Go to Network and Sharing Center → Change adapter settings → Right-click your network adapter → Properties → Internet Protocol Version 4 (TCP/IPv4) → Properties. Double-check:

  • The static IP is in the same subnet as your router (e.g., if your router is 192.168.1.1, use 192.168.1.x where x is between 2-254, and unique for each machine)
  • Subnet mask is set to 255.255.255.0 (the most common value)
  • Default gateway is your router's IP (e.g., 192.168.1.1)
  • DNS server addresses are valid: Use your router's IP, or public options like 8.8.8.8 (Google) or 114.114.114.114

• Check for IP conflicts
  Ensure the static IPs you assigned aren't being used by another device. Open Command Prompt and run ping [static-ip] from the other machine—if you get a response, that IP is already taken.

• Update network adapter drivers
  Outdated drivers can cause connectivity glitches with static IPs. Go to Device Manager → Network adapters → Right-click your adapter → Update driver software → Search automatically for updated drivers.

• Check your router settings
  Some routers block static IP devices unless they're added to an allowed list. Log into your router's admin panel (usually via 192.168.1.1 or 192.168.0.1) and make sure your static IPs aren't blocked by the router's firewall or DHCP rules.

Give these steps a try one by one—start with the sharing fixes first, then tackle the internet issue. Most of the time, it's just a small setting mismatch causing all the trouble!

内容的提问来源于stack exchange，提问作者Yousuf Amla