1. Using Windows Explorer (Open in windows explorer), Restart “WebClient” window service after the change

 

Change the default FileSizeLimitInBytes to larger than 50MB

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http://support.microsoft.com/kb/2668751

 

2. Using SharePoint Designer

Change the default maxRequestLength value in web.config

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3. SharePoint > Web Browser Upload

Change the default Maximum Upload Size in SharePoint Central Administration

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