Windows 断网修复脚本#

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@echo off
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setlocal EnableExtensions EnableDelayedExpansion
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title Windows Network Deep Repair (Windows 10/11)
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:: --- Self-elevate to admin ---
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net session >NUL 2>&1
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if errorlevel 1 (
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  echo Requesting administrative privileges...
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  powershell -NoProfile -ExecutionPolicy Bypass -Command "Start-Process -FilePath '%~f0' -Verb RunAs"
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  exit /b
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)
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:: --- Options (1=enable, 0=disable) ---
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set "ENABLE_FIREWALL_RESET=1"
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set "ENABLE_HOSTS_RESET=1"
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set "ENABLE_DELETE_WIFI_PROFILES=0"   :: if set to 1, ALL saved Wi-Fi profiles are removed
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set "ENABLE_HEALTH_REPAIR=1"          :: DISM + SFC
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:: --- Log file ---
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for /f %%i in ('powershell -NoProfile -Command "(Get-Date).ToString(\"yyyyMMdd_HHmmss\")"') do set "TS=%%i"
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set "LOG=%TEMP%\Net_DeepRepair_%TS%.log"
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echo --- Windows Network Deep Repair started %DATE% %TIME% --- > "%LOG%"
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call :log "Logging to: %LOG%"
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:: --- Inventory / snapshot ---
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call :log "Collecting environment info..."
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ver >> "%LOG%"
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ipconfig /all >> "%LOG%"
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route print >> "%LOG%"
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netsh winsock show catalog >> "%LOG%" 2>&1
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netsh winhttp show proxy >> "%LOG%" 2>&1
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:: --- Clear user & system proxies ---
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call :log "Resetting system and user proxy settings..."
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reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyEnable /t REG_DWORD /d 0 /f >> "%LOG%" 2>&1
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reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyServer /f >> "%LOG%" 2>&1
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reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v AutoConfigURL /f >> "%LOG%" 2>&1
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netsh winhttp reset proxy >> "%LOG%" 2>&1
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:: --- Reset HOSTS to Windows default (backup first) ---
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if "%ENABLE_HOSTS_RESET%"=="1" (
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  call :log "Resetting HOSTS file to Windows default (backup first)..."
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  set "HOSTS=%SystemRoot%\System32\drivers\etc\hosts"
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  if exist "%HOSTS%" copy /y "%HOSTS%" "%HOSTS%.bak.%TS%" >nul 2>&1
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  attrib -r -s -h "%HOSTS%" >nul 2>&1
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  (
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    echo # Default Windows HOSTS file
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    echo # localhost name resolution is handled within DNS itself.
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    echo # 127.0.0.1       localhost
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    echo # ::1             localhost
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  ) > "%HOSTS%"
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)
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:: --- Reset Winsock & TCP/IP (IPv4/IPv6) ---
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call :log "Resetting Winsock and TCP/IP (IPv4/IPv6)..."
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netsh winsock reset >> "%LOG%" 2>&1
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netsh int ipv4 reset "%TEMP%\ipv4_reset_%TS%.log" >> "%LOG%" 2>&1
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netsh int ipv6 reset "%TEMP%\ipv6_reset_%TS%.log" >> "%LOG%" 2>&1
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:: --- Flush DNS, clear ARP, clear routes, renew IP ---
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call :log "Clearing DNS, ARP cache and routing table; renewing IP..."
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ipconfig /flushdns >> "%LOG%" 2>&1
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arp -d * >> "%LOG%" 2>&1
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route -f >> "%LOG%" 2>&1
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ipconfig /release >> "%LOG%" 2>&1
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ipconfig /renew >> "%LOG%" 2>&1
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:: --- Ensure DHCP and automatic DNS on all active adapters ---
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call :log "Ensuring DHCP and automatic DNS on all adapters..."
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powershell -NoProfile -ExecutionPolicy Bypass -Command ^
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"Get-NetIPInterface -AddressFamily IPv4 | Where-Object { $_.Dhcp -ne 'Enabled' } | ForEach-Object { Set-NetIPInterface -Dhcp Enabled -InterfaceIndex $_.InterfaceIndex }" >> "%LOG%" 2>&1
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powershell -NoProfile -ExecutionPolicy Bypass -Command ^
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"Get-DnsClient | Where-Object { $_.InterfaceAlias -notmatch 'vEthernet|Hyper-V|VMware|VirtualBox|TAP|VPN|Loopback|WSL|Bluetooth' } | ForEach-Object { Set-DnsClientServerAddress -InterfaceAlias $_.InterfaceAlias -ResetServerAddresses }" >> "%LOG%" 2>&1
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:: --- Restart critical networking services ---
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call :log "Starting critical networking services..."
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for %%S in (bfe mpssvc Dhcp Dnscache nsi netprofm LanmanWorkstation LanmanServer iphlpsvc WinHttpAutoProxySvc) do (
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  sc config %%S start= auto >> "%LOG%" 2>&1
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  net start %%S >> "%LOG%" 2>&1
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)
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:: --- Backup & reset Windows Defender Firewall (optional) ---
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if "%ENABLE_FIREWALL_RESET%"=="1" (
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  call :log "Backing up and resetting Windows Defender Firewall to defaults..."
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  netsh advfirewall export "%TEMP%\FirewallPolicy_%TS%.wfw" >> "%LOG%" 2>&1
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  netsh advfirewall reset >> "%LOG%" 2>&1
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)
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:: --- Remove ALL saved Wi‑Fi profiles (optional deep cleanup) ---
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if "%ENABLE_DELETE_WIFI_PROFILES%"=="1" (
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  call :log "Deleting ALL saved Wi‑Fi profiles (you will need to re-enter Wi‑Fi passwords)..."
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  netsh wlan delete profile name=* >> "%LOG%" 2>&1
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)
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:: --- Component store & system files repair (optional) ---
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if "%ENABLE_HEALTH_REPAIR%"=="1" (
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  call :log "Repairing component store (DISM) and system files (SFC)..."
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  DISM /Online /Cleanup-Image /RestoreHealth >> "%LOG%" 2>&1
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  sfc /scannow >> "%LOG%" 2>&1
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)
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:: --- Final quick checks ---
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call :log "Final connectivity tests..."
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ping -n 2 1.1.1.1 >> "%LOG%" 2>&1 && call :log "ICMP to 1.1.1.1: OK" || call :log "ICMP to 1.1.1.1: FAILED"
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nslookup www.microsoft.com >> "%LOG%" 2>&1 && call :log "DNS lookup (www.microsoft.com): OK" || call :log "DNS lookup (www.microsoft.com): FAILED"
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call :log "Complete. A restart is recommended to finalize stack resets."
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echo.
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echo ===============================================================================
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echo   Windows Network Deep Repair is complete.
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echo   Log file: %LOG%
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echo   A restart is recommended to finalize Winsock/IP resets.
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echo ===============================================================================
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echo.
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choice /C YN /N /T 15 /D N /M "Reboot now? [Y/N] "
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if errorlevel 2 goto :end
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if errorlevel 1 shutdown /r /t 5 /c "Windows Network Deep Repair completed"
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goto :eof
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:log
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set "MSG=%~1"
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echo [%DATE% %TIME%] %MSG%
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>>"%LOG%" echo [%DATE% %TIME%] %MSG%
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goto :eof
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:end
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exit /b 0