Advanced Settings

Advanced options for S3 Drive are stored in the Windows registry in HKEY_LOCAL_MACHINE\SOFTWARE\nsoftware\S3Drive\20. This registry key holds settings that are available for S3 Drive globally. Sub-keys at this path hold settings for individual drives, and S3 providers.

The following keys hold configuration information:

Registry KeyApplicable Settings
HKEY_LOCAL_MACHINE\SOFTWARE\nsoftware\S3Drive\20Global settings for the application.
HKEY_LOCAL_MACHINE\SOFTWARE\nsoftware\S3Drive\20\DrivesDrives hold drive specific settings.
HKEY_LOCAL_MACHINE\SOFTWARE\nsoftware\S3Drive\20\ProvidersProviders stores provider and region settings.
HKEY_LOCAL_MACHINE\SOFTWARE\nsoftware\S3Drive\20\ContentTypesContent Types holds a mapping of common file extensions to MIME Content-Type values used when uploading files.

The following values can be configured within the root HKEY_LOCAL_MACHINE\SOFTWARE\nsoftware\S3Drive\20 registry key:

DeleteLogDaysDWORDSpecifies the number of days that log files will remain before being deleted. Only applies if RotateLogDays is greater than 0. If set to 0, old logs will not be deleted.

Specifies whether to force the closure and subsequent update of the encrypted file on disk after the last handle to the file is closed. In general the application will update the header of the encrypted file on disk when the file is closed.

In some cases the system may not close the file immediately after the last handle is closed which results in the file on disk not being updated in a timely manner. This setting forces the closure of the file after the last handle is released. Possible values are:

  • 0 - Not Enabled
  • 1 - Enabled (default)
LogFileStringContains the path to the log file.
LogModeDWORDDetermines the level of logging:
  • 0 - Off. Nothing will be logged.
  • 1 - Error. Only errors in S3 Drive's operation will be logged.
  • 2 - Warning. Additional warning information will be logged.
  • 3 - Info. General information about the status of the connection will be logged.
  • 4 - Verbose. Logs additional information about the connection and detailed protocol information.
  • 5 - Debug. Logs detailed debug information.
  • 6 - Debug2. Additional debug information. CAUTION: This generates a very large amount of data.
LogPortDWORDThe SysLog port that will be used to communicate between the service and the UI when S3 Drive is running as a service.
LogToFileDWORDDetermines whether or not the log will be written to a file. The file itself is specified by LogFile.
  • 0 - The log will only be written to the Log window on the Service tab. (default)
  • 1 - The log will also be saved to a file.
MaskSensitiveDWORDDetermines whether or not passwords will be masked in the log.
  • 0 - Passwords will be visible in the log.
  • 1 - Passwords will be replaced with '*' characters in the log. (default)
MaxLogLinesDWORDDetermines the maximum number of lines that will be stored in the Log window in the Service tab.
MountTimeoutDWORDDetermines how long (in seconds) S3 Drive will wait for Windows to mount a drive without reporting an error. The default is 20 seconds when this value is not present in the registry.
PasswordEncryptionMethodStringDetermines how passwords are encrypted for storage. The default value is Auto. Possible values are:
  • Auto (default) - Microsoft DPAPI is used to encrypt passwords. When running the application as a user (not as a Windows service) the passwords are encrypted and can only be decrypted by the current user.

    When running as a Windows service the passwords are encrypted for the machine and can be decrypted by any user on the machine. When running as a Windows service the user application and the service run under different accounts and must both be able to decrypt the values stored in the registry.

Additional values are reserved for future use.
PromptForRegPermissionsDWORDDetermines if S3 Drive will ask for registry permissions if it does not have them when it tries to write to the registry.
  • 0 - S3 Drive will not ask for registry permissions, instead bringing up a UAC dialog for one-time access.
  • 1 - S3 Drive will ask to be granted registry permissions. If granted, UAC access will not be required in the future. (default)
RotateLogDaysDWORDSpecifies how many days S3 Drive will use a log file before rotating to a new log file. If set to 0, the log file will never rotate.
RunAsServiceDWORDDetermines whether or not S3 Drive will run as a service.
ShowDotFilesDWORDDetermines whether files that start with a dot or period (.) are returned in a directory listing.
  • 0 - Dot files are not returned, so they are not displayed in explorer.
  • 1 - Dot files are returned in the directory listing (default).
HideDotFilesDWORDDetermines whether files that start with a dot or period (.) are marked as hidden when returned in a directory listing.
  • 0 - Do not hide dot files (default).
  • 1 - Any dot files will be marked with the hidden attribute.
IgnoredDirsStringSpecifies a comma-separated list of folders should be ignored by the virtual drive. Each folder included on the list cannot be created on the virtual drive and will not be returned in directory listings. Please specify the folder relative to the root of the drive.

Note: Use with caution. When the system asks us to create these folders we will respond with SYSERR_CANNOT_MAKE. Applications or system components that rely on these filesystem operations may start to behave unexpectedly.

  • "" - Nothing is ignored (default).
  • "\$RECYCLE.BIN" - Prevents the system from creating a recycle bin folder.


Specifies a comma-separated list of files to ignore requests for. Windows may make frequent, informational requests for files that it needs such as desktop.ini. If the request being made by the operating system is for one of the files in this list, the request will not be made to the S3 provider.

For each file on this list, we will service the system's request without performing the operation against remote storage. We respond by telling the system the file does not exist for simplicity.

  • "autorun.inf,bootmgr,bootnxt,hiberfil.sys,pagefile.sys,desktop.ini,thumbs.db" (default).

KeepAliveIntervalDWORDDetermines how often a keep alive packet is sent to the server, in seconds. If set to 0, no keep alive packets will be sent.
LocalHostStringSpecifies the local IP address of the network interface to use when connecting. This settings is typically only useful in machines with multiple network interfaces.
ProxyCheckedDWORDSpecifies whether or not the proxy settings are enabled.
ProxyHostStringSpecifies the host that S3 Drive will use to connect to the proxy.
ProxyPasswordStringSpecifies the password that S3 Drive will use to connect to the proxy.
ProxyPortDWORDSpecifies the port that S3 Drive will use to connect to the proxy.
ProxyTypeDWORDSpecifies the type of proxy that S3 Drive will connect to.
  • 0 - None (default)
  • 1 - Tunnel
  • 2 - SOCKS4
  • 3 - SOCKS5
ProxyUsernameStringSpecifies the username that S3 Drive will use to connect to the proxy.
ReconnectAttemptsDWORDSpecifies the number of times S3 Drive will attempt to reconnect if the connection to the server is lost.
ReconnectIntervalDWORDSpecifies the time (in seconds) between attempting another reconnection to the server. Default is 5 seconds.
TimeoutDWORDDetermines how many seconds S3 Drive will wait for a response from the server before ending the connection.

Copyright (c) 2022 /n software inc. - All rights reserved.
S3 Drive 2020 - Version 20.0 [Build 8318]