WebClient

Description:
Enables Windows-based programs (Like the Web Publishing Wizard) to create, access, and modify Internet-based files on Internet file servers using the WebDAV protocol. The WebDAV protocol is a file access protocol described in eXtendible Markup Language (XML) that travels over the Hypertext Transfer Protocol (HTTP).

Note this service interferes when accessing remote files and can cause long delays when accessing My Network Places. More Info MS KB832161

Note XP SP2 disables the use of the less secure "Basic Authentication", but one can enable it by setting this DWORD:

HKEY_LOCAL_MACHINE \SYSTEM \CurrentControlSet \Services \WebClient \Parameters]
UseBasicAuth = 1

Note in Windows Vista the value 1 means that it will allow basic authentication for only SSL sites, and the value 2 means that it will allow basic authentication for all sites.

More Info MS KB841215

Note if the WebDAV folder contains more than a 1000 files, then XP might fail to enumerate all the files in the folder, as there is a max size limit when downloading the directory listing:

[HKEY_LOCAL_MACHINE \SYSTEM \CurrentControlSet \Services \WebClient \Parameters]
FileAttributesLimitInBytes = 10000000 (Max size in bytes for a directory listing)

More Info MS KB912152

Note if trying to access a file larger than 50 MByte in a WebDAV folder, then XP might fail to download the file, as there is a max size limit when downloading files:

[HKEY_LOCAL_MACHINE \SYSTEM \CurrentControlSet \Services \WebClient \Parameters]
FileSizeLimitInBytes = 50000000 (Max size in bytes for a file download)

More Info MS KB900900


Related Mapping WebDAV folder as a network drive letter
Recommended State:
  • Disabled.
Default State:
  • Win7: Manual.
  • Vista: Automatic.
  • Win2k3: Disabled.
  • WinXP: Automatic.
Process Name:
Supports:
  • None
Depends:
  • WebDav Client Redirector

Updated: 21 September 2009

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