Set SYSVOL share compatibility

Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2003, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista

This policy setting controls whether or not the SYSVOL share created by the Net Logon service on a domain controller (DC) should support compatibility in file sharing semantics with earlier applications. When this setting is enabled, the SYSVOL share will honor file sharing semantics that grant requests for exclusive read access to files on the share even when the caller has only read permission. When this setting is disabled or not configured, the SYSVOL share will grant shared read access to files on the share when exclusive access is requested and the caller has only read permission. By default, the SYSVOL share will grant shared read access to files on the share when exclusive access is requested. Note: The SYSVOL share is a share created by the Net Logon service for use by Group Policy clients in the domain. The default behavior of the SYSVOL share ensures that no application with only read permission to files on the sysvol share can lock the files by requesting exclusive read access, which might prevent Group Policy settings from being updated on clients in the domain. When this setting is enabled, an application that relies on the ability to lock files on the SYSVOL share with only read permission will be able to deny Group Policy clients from reading the files, and in general the availability of the SYSVOL share on the domain will be decreased. If you enable this policy setting, domain administrators should ensure that the only applications using the exclusive read capability in the domain are those approved by the administrator.

This policy has no additional user input fields.

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  Allow cryptography algorithms compatible with Windows NT 4.0

  At least Windows Vista
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  Contact PDC on logon failure

  At least Windows Server 2003 operating systems or Windows XP Professional
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  Log Enhanced Domain-wide NTLM Logs

  At least Windows 11 Version 24H2
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  Set Netlogon share compatibility

  At least Windows Server 2003
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  Set scavenge interval

  At least Windows Server 2003 operating systems or Windows XP Professional
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  Specify expected dial-up delay on logon

  At least Windows Server 2003 operating systems or Windows XP Professional
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  Specify log file debug output level

  At least Windows Server 2003
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  Specify maximum log file size

  At least Windows Server 2003
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  Specify negative DC Discovery cache setting

  At least Windows Server 2003 operating systems or Windows XP Professional
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  Specify positive periodic DC Cache refresh for non-background callers

  At least Windows Server 2003 operating systems or Windows XP Professional
• Computer
  Specify site name

  At least Windows Server 2003 operating systems or Windows XP Professional
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  Use final DC discovery retry setting for background callers

  At least Windows Server 2003 operating systems or Windows XP Professional