Control use of the File System API for reading

Setting the policy to 3 lets websites ask for read access to files and directories in the host operating system's file system via the File System API. Setting the policy to 2 denies access.

Leaving it unset lets websites ask for access, but users can change this setting.

Supported on: At least Microsoft Windows 7 or Windows Server 2008 family

Control use of the File System API for reading


  1. Do not allow any site to request read access to files and directories via the File System API
    Registry HiveHKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
    Registry PathSoftware\Policies\Google\Chrome
    Value NameDefaultFileSystemReadGuardSetting
    Value TypeREG_DWORD
    Value2
  2. Allow sites to ask the user to grant read access to files and directories via the File System API
    Registry HiveHKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
    Registry PathSoftware\Policies\Google\Chrome
    Value NameDefaultFileSystemReadGuardSetting
    Value TypeREG_DWORD
    Value3


chrome.admx

Administrative Templates (Computers)

Administrative Templates (Users)