XX-net/XX-Net · warning

remove %s fail:%r

Error message

remove %s fail:%r

What it means

In the win10 IPv6 tunnel elevation path, before running the helper script with admin rights (win32runas.runas) the code tries to clear an old log file; os.remove(log_file) raised and the warning was logged. Elevation then proceeds, so this is non-fatal.

Source

Thrown at code/default/gae_proxy/local/ipv6_tunnel/win10.py:169

netsh interface teredo set state disable
netsh interface 6to4 set state disabled
netsh interface isatap set state disabled
"""

has_admin = win32runas.is_admin()

# Use this if need admin
# Don't hide the console window
def elevate(script_path, clear_log=True):
    global script_is_running
    if not script_is_running:
        script_is_running = True

        if clear_log and os.path.isfile(log_file):
            try:
                os.remove(log_file)
            except Exception as e:
                xlog.warn("remove %s fail:%r", log_file, e)

        try:
            win32runas.runas(None, script_path)
            return True
        except Exception as e:
            xlog.warning('elevate e:%r', e)
        finally:
            script_is_running = False

script_is_running = False
last_get_state_time = 0
last_set_server_time = 0
last_state = "unknown"

client_ext = 'natawareclient' if platform.version()[0] > '6' else 'enterpriseclient'

def client_type():
    try:

View on GitHub (pinned to cfa5bc17b6)

Solutions

1. Kill any lingering IPv6 helper/script process (check Task Manager for the elevation script) and retry
2. Delete the log file manually from an elevated shell, then retry the operation
3. Ensure the proxy's log directory is writable/deletable by the invoking user
4. Ignore if the subsequent runas succeeds and the tunnel comes up

import os
if os.path.exists(log_file):
    try:
        os.rename(log_file, log_file + '.old')  # rename often succeeds where remove fails
    except OSError:
        pass

try:
    ok = elevate(clear_log=True)
except Exception as e:
    xlog.warning('elevate e:%r', e)
    ok = False
if not ok:
    prompt_user_to_run_helper_manually()

When it happens

Trigger: elevate(clear_log=True) sees log_file exists; os.remove fails because the file is locked by a running elevated helper, open in another handle, or ACLs deny deletion (typical on Windows under UAC).

Common situations: Previous enable/disable/set_best_server helper still running or crashed holding the log; script run from a non-admin account without delete rights on the file; antivirus scanning the file at removal time.

Related errors

• remove %s fail:%r
• Servers could not be resolved, %r.
• parse reserve port fail, line:%s, e:%r
• Can't found acceptable ports
• proxy_setting:%r

AI-assisted analysis of XX-net/XX-Net@cfa5bc17b6 (2026-08-27). Data as JSON: /api/errors/9e63293f59614e26. Report an issue: GitHub.