Trying to download more than 50Mb from SharePoint 2007 via webdav? You’ll need to know this…

author Andy Dawson calendar Feb 19, 2010 · 1 min read · Active Directory Group Policy SharePoint  ·
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If you store large files in SharePoint 2007 and are using webdav to access them (Explorer View uses webdav for example), you may be seeing the following error:

Cannot Copy : Cannot read from the source file or disk

If so, this relates to a registry key which is set on the local machine to limit the maximum file download size to 50Mb when using webdav.  To correct this behaviour, change the value of the FileSizeLimitInBytes registry key needs changing on the client machines.  To do this, follow these steps:

  • Start regedit
  • locate the following registry key:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebCLient\Paramters
  • In the right pane of the registry editor, right click the FileSizeLimitInBytes key and select ‘modify’
  • Enter a new value for this maximum file size (in bytes, as the key states) and click OK.
  • Close regedit and restart the computer.

Instead of making this change individually on each of the client machines, this key can of course be distributed via your organisation’s group policy.

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