diff --git a/core/ssh_client.py b/core/ssh_client.py
index 3399420..deb6e68 100644
--- a/core/ssh_client.py
+++ b/core/ssh_client.py
@@ -246,7 +246,10 @@ class SSHClientWrapper:
                 sftp.put(local_path, remote_path, callback=progress_cb)
             else:
                 sftp.put(local_path, remote_path)
-            sftp.chmod(remote_path, 0o664)
+            try:
+                sftp.chmod(remote_path, 0o664)
+            except OSError:
+                pass  # Windows OpenSSH doesn't support chmod
             sftp.close()
         finally:
             client.close()
diff --git a/releases/ServerManager-v1.8.58-win-x64.exe b/releases/ServerManager-v1.8.58-win-x64.exe
deleted file mode 100644
index 9225674..0000000
Binary files a/releases/ServerManager-v1.8.58-win-x64.exe and /dev/null differ
diff --git a/releases/ServerManager-v1.8.59-win-x64.exe b/releases/ServerManager-v1.8.59-win-x64.exe
deleted file mode 100644
index 92aa266..0000000
Binary files a/releases/ServerManager-v1.8.59-win-x64.exe and /dev/null differ
diff --git a/releases/ServerManager-v1.8.60-win-x64.exe b/releases/ServerManager-v1.8.65-win-x64.exe
similarity index 97%
rename from releases/ServerManager-v1.8.60-win-x64.exe
rename to releases/ServerManager-v1.8.65-win-x64.exe
index 90ef8d5..3bf5b92 100644
Binary files a/releases/ServerManager-v1.8.60-win-x64.exe and b/releases/ServerManager-v1.8.65-win-x64.exe differ
diff --git a/tools/ssh.py b/tools/ssh.py
index 2e7472b..6b03bf1 100644
--- a/tools/ssh.py
+++ b/tools/ssh.py
@@ -149,9 +149,13 @@ def run_command(server: dict, command: str, use_sudo: bool = True) -> tuple:
     client = get_client(server)
     try:
         user = server.get("user", "root")
-        need_sudo = use_sudo and user != "root"
+        is_win = _is_windows_server(server)
+        need_sudo = not is_win and use_sudo and user != "root"
 
-        if need_sudo:
+        if is_win:
+            # Windows SSH: translate Linux commands to Windows equivalents
+            full_cmd = _sanitize_windows_command(command)
+        elif need_sudo:
             # Use sudo -S to read password from stdin
             # -p '' suppresses the password prompt text
             full_cmd = f"sudo -S -p '' bash -c {_shell_quote(command)}"
@@ -184,10 +188,278 @@ def _shell_quote(s: str) -> str:
     return "'" + s.replace("'", "'\\''") + "'"
 
 
+def _is_windows_server(server: dict) -> bool:
+    """Detect if server is Windows by alias, notes, or type."""
+    stype = server.get("type", "ssh")
+    if stype in ("winrm", "rdp"):
+        return True
+    text = (server.get("alias", "") + " " + server.get("notes", "")).lower()
+    return "windows" in text or "win " in text
+
+
+# ── Windows command translation ──────────────────────
+
+# Map of Linux commands → Windows/PowerShell equivalents
+# Each entry: (regex_pattern, replacement_callable)
+# Patterns use ^\s* anchoring — matches only at command start, no partial-word risk
+_WIN_CMD_MAP = [
+    # --- Skip / warn ---
+    (r'^\s*chmod\b.*',       lambda m: 'echo [SKIP] chmod not supported on Windows'),
+    (r'^\s*chown\b.*',       lambda m: 'echo [SKIP] chown not supported on Windows'),
+    # --- Environment ---
+    (r'^\s*export\s+(\w+)=(.*)', lambda m: f'set {m.group(1)}={m.group(2)}'),
+    (r'^\s*env\s*$',         lambda m: 'set'),
+    (r'^\s*printenv\s*$',    lambda m: 'set'),
+    (r'^\s*printenv\s+(\w+)', lambda m: f'echo %{m.group(1)}%'),
+    # --- File operations ---
+    (r'^\s*ls\s+-la\s+(.*)',  lambda m: f'dir /a "{m.group(1).strip()}"'),
+    (r'^\s*ls\s+-lah?\s+(.*)', lambda m: f'dir /a "{m.group(1).strip()}"'),
+    (r'^\s*ls\s+-[a-zA-Z]*R[a-zA-Z]*\s*(.*)', lambda m: f'dir /s /a "{m.group(1).strip()}"' if m.group(1).strip() else 'dir /s /a'),
+    (r'^\s*ls\s+-[a-zA-Z]+\s+(.*)', lambda m: f'dir "{m.group(1).strip()}"'),
+    (r'^\s*ls\s+-[a-zA-Z]+\s*$', lambda m: 'dir'),
+    (r'^\s*ls\s+(.*)',       lambda m: f'dir "{m.group(1).strip()}"'),
+    (r'^\s*ls\s*$',          lambda m: 'dir'),
+    (r'^\s*cat\b\s+(.*)',    lambda m: f'type {m.group(1).strip()}'),
+    (r'^\s*cp\s+-r\s+(.*?)\s+(.*)', lambda m: f'xcopy /E /I "{m.group(1).strip()}" "{m.group(2).strip()}"'),
+    (r'^\s*cp\s+(.*?)\s+(.*)', lambda m: f'copy "{m.group(1).strip()}" "{m.group(2).strip()}"'),
+    (r'^\s*mv\s+(.*?)\s+(.*)', lambda m: f'move "{m.group(1).strip()}" "{m.group(2).strip()}"'),
+    (r'^\s*rm\s+-rf?\s+(.*)', lambda m: f'rmdir /S /Q "{m.group(1).strip()}"'),
+    (r'^\s*rm\s+-f\s+(.*)',  lambda m: f'del /F /Q "{m.group(1).strip()}"'),
+    (r'^\s*rm\s+(.*)',       lambda m: f'del /Q "{m.group(1).strip()}"'),
+    (r'^\s*mkdir\s+-p\s+(.*)', lambda m: f'mkdir "{m.group(1).strip()}"'),
+    (r'^\s*touch\s+(.*)',    lambda m: f'type nul > "{m.group(1).strip()}"'),
+    (r'^\s*pwd\s*$',         lambda m: 'cd'),
+    # --- Text processing (PowerShell) ---
+    (r'^\s*grep\s+-r\s+"?([^"]*)"?\s+(.*)', lambda m: f'powershell -Command "Get-ChildItem -Recurse {m.group(2).strip()} | Select-String -Pattern \'{m.group(1)}\'"'),
+    (r'^\s*grep\s+-i\s+"?([^"]*)"?\s+(.*)', lambda m: f'findstr /I "{m.group(1)}" {m.group(2).strip()}'),
+    (r'^\s*grep\s+"?([^"]*)"?\s+(.*)', lambda m: f'findstr "{m.group(1)}" {m.group(2).strip()}'),
+    (r'^\s*head\s+-n?\s*(\d+)\s+(.*)', lambda m: f'powershell -Command "Get-Content \'{m.group(2).strip()}\' | Select-Object -First {m.group(1)}"'),
+    (r'^\s*head\s+(.*)',     lambda m: f'powershell -Command "Get-Content \'{m.group(1).strip()}\' | Select-Object -First 10"'),
+    (r'^\s*tail\s+-n?\s*(\d+)\s+(.*)', lambda m: f'powershell -Command "Get-Content \'{m.group(2).strip()}\' -Tail {m.group(1)}"'),
+    (r'^\s*tail\s+-f\s+(.*)', lambda m: f'powershell -Command "Get-Content \'{m.group(1).strip()}\' -Wait -Tail 20"'),
+    (r'^\s*tail\s+(.*)',     lambda m: f'powershell -Command "Get-Content \'{m.group(1).strip()}\' -Tail 10"'),
+    (r'^\s*wc\s+-l\s+(.*)',  lambda m: f'powershell -Command "(Get-Content \'{m.group(1).strip()}\' | Measure-Object -Line).Lines"'),
+    # --- Search ---
+    (r'^\s*find\s+(.*?)\s+-name\s+"?([^"]*)"?', lambda m: f'powershell -Command "Get-ChildItem -Path \'{m.group(1).strip()}\' -Recurse -Filter \'{m.group(2)}\'"'),
+    (r'^\s*which\s+(.*)',    lambda m: f'where.exe {m.group(1).strip()}'),
+    (r'^\s*whereis\s+(.*)',  lambda m: f'where.exe {m.group(1).strip()}'),
+    # --- Process / system ---
+    (r'^\s*ps\s+aux\s*$',    lambda m: 'tasklist'),
+    (r'^\s*ps\s+-ef\s*$',    lambda m: 'tasklist'),
+    (r'^\s*ps\s*$',          lambda m: 'tasklist'),
+    (r'^\s*kill\s+-9\s+(\d+)', lambda m: f'taskkill /F /PID {m.group(1)}'),
+    (r'^\s*kill\s+(\d+)',    lambda m: f'taskkill /PID {m.group(1)}'),
+    (r'^\s*top\s*$',         lambda m: 'powershell -Command "Get-Process | Sort-Object CPU -Descending | Select-Object -First 20 Name, Id, CPU, @{N=\'Mem(MB)\';E={[math]::Round($_.WS/1MB,1)}}"'),
+    (r'^\s*df\s*',           lambda m: 'powershell -Command "Get-PSDrive -PSProvider FileSystem | Select-Object Name, @{N=\'Used(GB)\';E={[math]::Round($_.Used/1GB,1)}}, @{N=\'Free(GB)\';E={[math]::Round($_.Free/1GB,1)}}"'),
+    (r'^\s*free\b.*',        lambda m: 'powershell -Command "$os=Get-CimInstance Win32_OperatingSystem; [PSCustomObject]@{TotalMB=[math]::Round($os.TotalVisibleMemorySize/1024); FreeMB=[math]::Round($os.FreePhysicalMemory/1024); UsedMB=[math]::Round(($os.TotalVisibleMemorySize-$os.FreePhysicalMemory)/1024)} | Format-List"'),
+    (r'^\s*du\s+-sh?\s+(.*)', lambda m: f'powershell -Command "(Get-ChildItem -Recurse \'{m.group(1).strip()}\' | Measure-Object -Property Length -Sum).Sum / 1MB | ForEach-Object {{Write-Host ([math]::Round($_,1)) \'MB\'}}"'),
+    (r'^\s*uname\b.*',       lambda m: 'powershell -Command "[System.Environment]::OSVersion | Format-List"'),
+    (r'^\s*uptime\s*$',      lambda m: 'powershell -Command "$b=(Get-CimInstance Win32_OperatingSystem).LastBootUpTime; $u=(New-TimeSpan $b (Get-Date)); Write-Host \"up $($u.Days)d $($u.Hours)h $($u.Minutes)m, since $b\""'),
+    (r'^\s*whoami\s*$',      lambda m: 'whoami'),
+    (r'^\s*hostname\s*$',    lambda m: 'hostname'),
+    # --- Service management ---
+    (r'^\s*systemctl\s+status\s+(.*)', lambda m: f'powershell -Command "Get-Service \'{m.group(1).strip()}\' | Format-List"'),
+    (r'^\s*systemctl\s+start\s+(.*)',  lambda m: f'powershell -Command "Start-Service \'{m.group(1).strip()}\'"'),
+    (r'^\s*systemctl\s+stop\s+(.*)',   lambda m: f'powershell -Command "Stop-Service \'{m.group(1).strip()}\'"'),
+    (r'^\s*systemctl\s+restart\s+(.*)', lambda m: f'powershell -Command "Restart-Service \'{m.group(1).strip()}\'"'),
+    (r'^\s*systemctl\s+list-units\b.*', lambda m: 'powershell -Command "Get-Service | Format-Table Name, Status, DisplayName -AutoSize"'),
+    # --- Networking ---
+    (r'^\s*ifconfig\s*$',    lambda m: 'ipconfig'),
+    (r'^\s*ip\s+addr\b.*',   lambda m: 'ipconfig /all'),
+    (r'^\s*ip\s+route\b.*',  lambda m: 'route print'),
+    (r'^\s*netstat\b(.*)',   lambda m: f'netstat{m.group(1)}'),
+    (r'^\s*ss\s+-tulnp\s*$', lambda m: 'netstat -ano'),
+    (r'^\s*curl\s+(.*)',     lambda m: f'powershell -Command "Invoke-WebRequest -Uri \'{m.group(1).strip()}\' -UseBasicParsing | Select-Object StatusCode, Content"'),
+    (r'^\s*wget\s+(.*)',     lambda m: f'powershell -Command "Invoke-WebRequest -Uri \'{m.group(1).strip()}\' -OutFile ([System.IO.Path]::GetFileName(\'{m.group(1).strip()}\'))"'),
+]
+
+
+def _strip_sudo(command: str) -> str:
+    """Strip sudo and its flags from a command. Handles -u USER, -S, -p '', etc."""
+    # sudo flags that consume the next argument
+    _SUDO_ARG_FLAGS = {'-u', '-g', '-C', '-p', '-r', '-t', '-D'}
+    parts = command.strip().split()
+    if not parts or parts[0] != 'sudo':
+        return command
+    i = 1
+    while i < len(parts):
+        if parts[i].startswith('-'):
+            flag = parts[i]
+            i += 1
+            if flag in _SUDO_ARG_FLAGS and i < len(parts):
+                i += 1  # skip argument
+        else:
+            break
+    return ' '.join(parts[i:]) if i < len(parts) else ''
+
+
+def _sanitize_windows_command(command: str) -> str:
+    """Translate Linux commands to Windows/PowerShell equivalents for Windows SSH servers.
+
+    Features:
+    - Translates common Linux commands (ls, cat, grep, ps, df, etc.)
+    - Wraps pipe chains in PowerShell when needed
+    - Forces UTF-8 via chcp 65001
+    - Passes through native Windows/PowerShell commands unchanged
+    - Auto-removes sudo, skips chmod/chown with warning
+    """
+    import re
+
+    # 0. Empty / whitespace guard
+    if not command or not command.strip():
+        return command
+
+    # 1. Strip sudo early (before any other logic)
+    if re.match(r'^\s*sudo\b', command):
+        command = _strip_sudo(command)
+    if not command:
+        return command
+
+    # 2. Handle && chains — split, translate each, rejoin (before passthrough!)
+    if ' && ' in command:
+        parts = command.split(' && ')
+        translated = [_translate_single_command(p.strip()) for p in parts]
+        joined = ' && '.join(translated)
+        return f"chcp 65001 >nul && {joined}"
+
+    # 3. Handle pipes (before passthrough!)
+    if '|' in command:
+        return _translate_piped_command(command)
+
+    # 4. Passthrough — already Windows/PowerShell native (single commands only)
+    stripped = command.strip()
+    passthrough_prefixes = ('powershell ', 'powershell.exe ', 'pwsh ', 'pwsh.exe ',
+                            'cmd /c ', 'cmd.exe /c ', 'chcp ', 'dir ', 'type ',
+                            'copy ', 'move ', 'del ', 'mkdir ', 'rmdir ',
+                            'tasklist', 'taskkill', 'ipconfig', 'netstat',
+                            'systeminfo', 'where.exe', 'findstr ', 'echo ',
+                            'set ', 'reg ', 'sc ', 'wmic ',
+                            'Get-', 'Set-', 'New-', 'Remove-', 'Start-', 'Stop-',
+                            'Restart-', 'Invoke-', 'Select-', 'Write-', 'Out-',
+                            'Format-', 'Test-', 'Import-', 'Export-')
+    stripped_lower = stripped.lower()
+    for prefix in passthrough_prefixes:
+        if stripped_lower.startswith(prefix.lower()):
+            return f"chcp 65001 >nul && {command}"
+
+    # 5. Single command translation
+    translated = _translate_single_command(command)
+    return f"chcp 65001 >nul && {translated}"
+
+
+def _translate_single_command(command: str) -> str:
+    """Translate a single (non-piped) Linux command to Windows equivalent."""
+    import re
+    for pattern, replacement in _WIN_CMD_MAP:
+        match = re.match(pattern, command.strip(), re.IGNORECASE)
+        if match:
+            try:
+                return replacement(match)
+            except Exception:
+                continue
+    return command  # No match — pass through as-is
+
+
+def _translate_piped_command(command: str) -> str:
+    """Translate a piped Linux command chain to PowerShell."""
+    import re
+    # If it already contains PowerShell cmdlets, pass through
+    if re.search(r'Get-|Set-|Select-|Where-|ForEach-|Measure-', command):
+        return f"chcp 65001 >nul && {command}"
+
+    # Split by pipe, translate first command, check if we need PowerShell wrapping
+    parts = [p.strip() for p in command.split('|')]
+
+    # Try translating the first segment
+    first_translated = _translate_single_command(parts[0])
+
+    # If the pipe chain mixes cmd and grep/awk/sed — wrap entire thing in PowerShell
+    needs_ps = any(re.match(r'\s*(grep|awk|sed|sort|uniq|wc|head|tail|cut|tr)\b', p, re.IGNORECASE)
+                   for p in parts[1:])
+
+    if needs_ps:
+        # Build a PowerShell pipeline
+        ps_parts = [_linux_to_ps_pipe_segment(p.strip()) for p in parts]
+        ps_cmd = ' | '.join(ps_parts)
+        return f'chcp 65001 >nul && powershell -Command "{ps_cmd}"'
+
+    # Otherwise just join translated parts
+    translated_parts = [first_translated] + [_translate_single_command(p) for p in parts[1:]]
+    return f"chcp 65001 >nul && {' | '.join(translated_parts)}"
+
+
+def _linux_to_ps_pipe_segment(segment: str) -> str:
+    """Convert a single pipe segment from Linux to PowerShell equivalent."""
+    import re
+    s = segment.strip()
+    # cat → Get-Content
+    m = re.match(r'cat\b\s+(.*)', s, re.IGNORECASE)
+    if m:
+        return f"Get-Content '{m.group(1).strip()}'"
+    # ps aux/ps -ef → Get-Process
+    if re.match(r'ps\s+(aux|-ef)\s*$', s, re.IGNORECASE):
+        return 'Get-Process'
+    # grep → Select-String
+    m = re.match(r'grep\s+(-i\s+)?"?([^"]*)"?', s, re.IGNORECASE)
+    if m:
+        return f"Select-String -Pattern '{m.group(2)}'"
+    # sort
+    if re.match(r'sort\s*$', s, re.IGNORECASE):
+        return 'Sort-Object'
+    # sort -r / sort -n
+    if re.match(r'sort\s+-r', s, re.IGNORECASE):
+        return 'Sort-Object -Descending'
+    if re.match(r'sort\s+-n', s, re.IGNORECASE):
+        return 'Sort-Object {[int]$_}'
+    # uniq
+    if re.match(r'uniq\s*$', s, re.IGNORECASE):
+        return 'Get-Unique'
+    # wc -l
+    if re.match(r'wc\s+-l', s, re.IGNORECASE):
+        return 'Measure-Object -Line'
+    # head -n N
+    m = re.match(r'head\s+(-n\s*)?(\d+)', s, re.IGNORECASE)
+    if m:
+        return f'Select-Object -First {m.group(2)}'
+    if re.match(r'head\s*$', s, re.IGNORECASE):
+        return 'Select-Object -First 10'
+    # tail -n N
+    m = re.match(r'tail\s+(-n\s*)?(\d+)', s, re.IGNORECASE)
+    if m:
+        return f'Select-Object -Last {m.group(2)}'
+    if re.match(r'tail\s*$', s, re.IGNORECASE):
+        return 'Select-Object -Last 10'
+    # awk — basic field extraction
+    m = re.match(r"awk\s+['\"]?\{print\s+\$(\d+)\}['\"]?", s, re.IGNORECASE)
+    if m:
+        idx = int(m.group(1)) - 1
+        return f"ForEach-Object {{ ($_ -split '\\s+')[{idx}] }}"
+    # cut -d'X' -f N
+    m = re.match(r"cut\s+-d['\"]?(.)['\"]?\s+-f(\d+)", s, re.IGNORECASE)
+    if m:
+        idx = int(m.group(2)) - 1
+        return f"ForEach-Object {{ ($_ -split '{m.group(1)}')[{idx}] }}"
+    # sed — basic s/old/new/
+    m = re.match(r"sed\s+['\"]?s/([^/]*)/([^/]*)/?[g]?['\"]?", s, re.IGNORECASE)
+    if m:
+        return f"ForEach-Object {{ $_ -replace '{m.group(1)}', '{m.group(2)}' }}"
+    # tr -d 'X'
+    m = re.match(r"tr\s+-d\s+['\"]?(.+?)['\"]?\s*$", s, re.IGNORECASE)
+    if m:
+        return f"ForEach-Object {{ $_ -replace '[{m.group(1)}]', '' }}"
+    # Fallback — return as-is
+    return s
+
+
 # ── File transfer ─────────────────────────────────────
 
 def _normalize_remote_path(remote_path: str) -> str:
     """Normalize remote path by detecting and fixing MSYS path conversions."""
+    # Strip leading // that user adds to prevent Git Bash MSYS path conversion
+    # //C:/Temp → /C:/Temp
+    if remote_path.startswith("//") and len(remote_path) > 2 and remote_path[2] != "/":
+        remote_path = remote_path[1:]
+
     # If the path looks like a Windows path that was converted by MSYS, fix it back
     if ':' in remote_path and ('Program Files/Git' in remote_path or (len(remote_path) > 3 and remote_path[1] == ':' and remote_path[2] == '/')):
         # Convert C:/Program Files/Git/tmp/file.txt back to /tmp/file.txt
@@ -251,7 +523,10 @@ def upload_file(server: dict, local_path: str, remote_path: str):
         t0 = time.time()
         sftp.put(local_path, normalized_remote_path, callback=_progress_cb(file_size))
         elapsed = time.time() - t0
-        sftp.chmod(normalized_remote_path, 0o664)
+        try:
+            sftp.chmod(normalized_remote_path, 0o664)
+        except OSError:
+            pass  # Windows OpenSSH doesn't support chmod
         sftp.close()
 
         info = f"{_fmt_size(file_size)}, {elapsed:.1f}s"
diff --git a/version.py b/version.py
index e000a7f..5c27356 100644
--- a/version.py
+++ b/version.py
@@ -1,6 +1,6 @@
 """Version info for ServerManager."""
 
-__version__ = "1.8.63"
+__version__ = "1.8.65"
 __app_name__ = "ServerManager"
 __author__ = "aibot777"
 __description__ = "Desktop GUI for managing remote servers"