WinSCP compatibility issues with AWS Settings

[EngrAhsanAli]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration issue.
• This issue is not already reported on Github (I've searched it).

Bug description

I am using this tool for two plus years. Just had a chance to work with WinSCP/Putty FTP interaction with SFTPGO based SFTP backed with AWS S3.
Although the issue is common, but I am not sure if it has been addressed properly.
While transferring the file to WinSCP, it shows error/warning saying that the file transfer is completed but however, the nopreservetime has to turned off from settings.
I consider since CyberDuck on the other hand doesnt have any kind of these issues, so I thought maybe it can be fixed on sftpgo server side to avoid timestamp issues.

I can provide more details if needed, please do not hesitate to request for that.

https://winscp.net/forum/viewtopic.php?t=6191

Steps to reproduce

1. Configure SFTP account using SFTPGO server with AWS Backed storage settings
2. Use CyberDuck to check if a file drop upload works properly which works always
3. Use WinSCP for same steps to see the dialog box mentioning about the warning
4. Image as follow

Expected behavior

It can be either ignored by sftpgo server, having an option to silent the warnings like this
Or handle in a way like not to have this issue with timestamps updates

SFTPGo version

2.5.6

Data provider

AWS

Installation method

Community Deb package

Configuration

{
  "common": {
    "idle_timeout": 15,
    "upload_mode": 0,
    "actions": {
      "execute_on": [],
      "execute_sync": [],
      "hook": ""
    },
    "setstat_mode": 0,
    "temp_path": "",
    "proxy_protocol": 0,
    "proxy_allowed": [],
    "startup_hook": "",
    "post_connect_hook": "",
    "post_disconnect_hook": "",
    "data_retention_hook": "",
    "max_total_connections": 0,
    "max_per_host_connections": 20,
    "whitelist_file": "",
    "defender": {
      "enabled": false,
      "driver": "memory",
      "ban_time": 30,
      "ban_time_increment": 50,
      "threshold": 15,
      "score_invalid": 2,
      "score_valid": 1,
      "score_limit_exceeded": 3,
      "observation_time": 30,
      "entries_soft_limit": 100,
      "entries_hard_limit": 150,
      "safelist_file": "",
      "blocklist_file": "",
      "safelist": [],
      "blocklist": []
    },
    "rate_limiters": [
      {
        "average": 0,
        "period": 1000,
        "burst": 1,
        "type": 2,
        "protocols": [
          "SSH",
          "FTP",
          "DAV",
          "HTTP"
        ],
        "allow_list": [],
        "generate_defender_events": false,
        "entries_soft_limit": 100,
        "entries_hard_limit": 150
      }
    ]
  },
  "acme": {
    "domains": [],
    "email": "",
    "key_type": "4096",
    "certs_path": "certs",
    "ca_endpoint": "https://acme-v02.api.letsencrypt.org/directory",
    "renew_days": 30,
    "http01_challenge": {
      "port": 80,
      "proxy_header": "",
      "webroot": ""
    },
    "tls_alpn01_challenge": {
      "port": 0
    }
  },
  "sftpd": {
    "bindings": [
      {
        "port": 22,
        "address": "",
        "apply_proxy_config": true
      }
    ],
    "max_auth_tries": 0,
    "banner": "",
    "host_keys": [],
    "host_certificates": [],
    "host_key_algorithms": [],
    "kex_algorithms": [],
    "ciphers": [],
    "macs": [],
    "trusted_user_ca_keys": [],
    "revoked_user_certs_file": "",
    "login_banner_file": "",
    "enabled_ssh_commands": [
      "md5sum",
      "sha1sum",
      "sha256sum",
      "cd",
      "pwd",
      "scp"
    ],
    "keyboard_interactive_authentication": false,
    "keyboard_interactive_auth_hook": "",
    "password_authentication": true,
    "folder_prefix": ""
  },
  "ftpd": {
    "bindings": [
      {
        "port": 21,
        "address": "",
        "apply_proxy_config": false,
        "tls_mode": 0,
        "certificate_file": "",
        "certificate_key_file": "",
        "min_tls_version": 12,
        "force_passive_ip": "",
        "passive_ip_overrides": [],
        "client_auth_type": 0,
        "tls_cipher_suites": [],
        "passive_connections_security": 0,
        "active_connections_security": 0,
        "debug": false
      }
    ],
    "banner": "",
    "banner_file": "",
    "active_transfers_port_non_20": true,
    "passive_port_range": {
      "start": 50000,
      "end": 50100
    },
    "disable_active_mode": false,
    "enable_site": false,
    "hash_support": 0,
    "combine_support": 0,
    "certificate_file": "",
    "certificate_key_file": "",
    "ca_certificates": [],
    "ca_revocation_lists": []
  },
  "webdavd": {
    "bindings": [
      {
        "port": 2123,
        "address": "",
        "enable_https": false,
        "certificate_file": "",
        "certificate_key_file": "",
        "min_tls_version": 12,
        "client_auth_type": 0,
        "tls_cipher_suites": [],
        "prefix": "",
        "proxy_allowed": [],
        "client_ip_proxy_header": "",
        "client_ip_header_depth": 0
      }
    ],
    "certificate_file": "",
    "certificate_key_file": "",
    "ca_certificates": [],
    "ca_revocation_lists": [],
    "cors": {
      "enabled": false,
      "allowed_origins": [],
      "allowed_methods": [],
      "allowed_headers": [],
      "exposed_headers": [],
      "allow_credentials": false,
      "max_age": 0
    },
    "cache": {
      "users": {
        "expiration_time": 0,
        "max_size": 50
      },
      "mime_types": {
        "enabled": true,
        "max_size": 1000
      }
    }
  },
  "data_provider": {
    "driver": "sqlite",
    "name": "sftpgo.db",
    "host": "",
    "port": 0,
    "username": "",
    "password": "",
    "sslmode": 0,
    "root_cert": "",
    "client_cert": "",
    "client_key": "",
    "connection_string": "",
    "sql_tables_prefix": "",
    "track_quota": 2,
    "delayed_quota_update": 0,
    "pool_size": 0,
    "users_base_dir": "",
    "actions": {
      "execute_on": [],
      "execute_for": [],
      "hook": ""
    },
    "external_auth_hook": "",
    "external_auth_scope": 0,
    "credentials_path": "credentials",
    "pre_login_hook": "",
    "post_login_hook": "",
    "post_login_scope": 0,
    "check_password_hook": "",
    "check_password_scope": 0,
    "password_hashing": {
      "bcrypt_options": {
        "cost": 10
      },
      "argon2_options": {
        "memory": 65536,
        "iterations": 1,
        "parallelism": 2
      },
      "algo": "bcrypt"
    },
    "password_validation": {
      "admins": {
        "min_entropy": 0
      },
      "users": {
        "min_entropy": 0
      }
    },
    "password_caching": true,
    "update_mode": 0,
    "create_default_admin": false,
    "naming_rules": 1,
    "is_shared": 0,
    "backups_path": "backups",
    "auto_backup": {
      "enabled": true,
      "hour": "0",
      "day_of_week": "*"
    }
  },
  "httpd": {
    "bindings": [
      {
        "port": 8080,
        "address": "",
        "enable_web_admin": true,
        "enable_web_client": true,
        "enabled_login_methods": 0,
        "enable_https": false,
        "certificate_file": "",
        "certificate_key_file": "",
        "min_tls_version": 12,
        "client_auth_type": 0,
        "tls_cipher_suites": [],
        "proxy_allowed": [],
        "client_ip_proxy_header": "",
        "client_ip_header_depth": 0,
        "hide_login_url": 0,
        "render_openapi": true,
        "web_client_integrations": [],
        "oidc": {
          "client_id": "",
          "client_secret": "",
          "config_url": "",
          "redirect_base_url": "",
          "scopes": [
            "openid",
            "profile",
            "email"
          ],
          "username_field": "",
          "role_field": "",
          "implicit_roles": false,
          "custom_fields": [],
          "debug": false
        },
        "security": {
          "enabled": false,
          "allowed_hosts": [],
          "allowed_hosts_are_regex": false,
          "hosts_proxy_headers": [],
          "https_redirect": false,
          "https_host": "",
          "https_proxy_headers": [],
          "sts_seconds": 0,
          "sts_include_subdomains": false,
          "sts_preload": false,
          "content_type_nosniff": false,
          "content_security_policy": "",
          "permissions_policy": "",
          "cross_origin_opener_policy": "",
          "expect_ct_header": ""
        },
        "branding": {
          "web_admin": {
            "name": "My Solutions",
            "short_name": "My Web Admin",
            "favicon_path": "",
            "logo_path": "",
            "login_image_path": "",
            "disclaimer_name": "My Solutions",
            "disclaimer_path": "",
            "default_css": "",
            "extra_css": []
          },
          "web_client": {
            "name": "My Solutions",
            "short_name": "My Web Client",
            "favicon_path": "",
            "logo_path": "",
            "login_image_path": "",
            "disclaimer_name": "My Solutions",
            "disclaimer_path": "",
            "default_css": "",
            "extra_css": []
          }
        }
      }
    ],
    "templates_path": "templates",
    "static_files_path": "static",
    "openapi_path": "openapi",
    "web_root": "",
    "certificate_file": "",
    "certificate_key_file": "",
    "ca_certificates": [],
    "ca_revocation_lists": [],
    "signing_passphrase": "",
    "token_validation": 0,
    "max_upload_file_size": 1048576000,
    "cors": {
      "enabled": false,
      "allowed_origins": [],
      "allowed_methods": [],
      "allowed_headers": [],
      "exposed_headers": [],
      "allow_credentials": false,
      "max_age": 0
    },
    "setup": {
      "installation_code": "",
      "installation_code_hint": "Installation code"
    },
    "hide_support_link": false
  },
  "telemetry": {
    "bind_port": 0,
    "bind_address": "127.0.0.1",
    "enable_profiler": false,
    "auth_user_file": "",
    "certificate_file": "",
    "certificate_key_file": "",
    "min_tls_version": 12,
    "tls_cipher_suites": []
  },
  "http": {
    "timeout": 20,
    "retry_wait_min": 2,
    "retry_wait_max": 30,
    "retry_max": 3,
    "ca_certificates": [],
    "certificates": [],
    "skip_tls_verify": false,
    "headers": []
  },
  "command": {
    "timeout": 30,
    "env": [],
    "commands": []
  },
  "kms": {
    "secrets": {
      "url": "",
      "master_key": "",
      "master_key_path": ""
    }
  },
  "mfa": {
    "totp": [
      {
        "name": "Default",
        "issuer": "SFTPGo",
        "algo": "sha1"
      }
    ]
  },
  "smtp": {
    "host": "",
    "port": 25,
    "from": "",
    "user": "",
    "password": "",
    "auth_type": 0,
    "encryption": 0,
    "domain": "",
    "templates_path": "templates"
  },
  "plugins": []

}

Relevant log output

No response

What are you using SFTPGo for?

Professional user, 1 person business

Additional info

No response

[drakkan]

This is already supported

[EngrAhsanAli]

Sorry, I cannot understand.
What changes should I make to get this work?
Can you refer to a ticket or any support material?

[drakkan]

we no longer provide free support sorry. Please check our support policy.
This is the only way to keep the project alive and completely open source.
Thanks for understanding.