A. On each front-end server in the farm, locate the following registry key:HKEY_LOCAL_MACHINE
\SYSTEM\\CurrentControlSet\Services\WebClientParametersSet the value of the FileSizeLimitInBytes key to 4294967295. Then, restart the Web Client service.

B. In SharePoint Central Administration, change the value of the Maximum Upload Size property for the web application.

C. Run the following Windows PowerShell command:$WebApp.MaximumFileSizePerExtension.Add ("MaxFileSize", 4096000)

D. Add the following markup to the web.config file for the web application:<httpRuntime executionTimeout
="999999"maxRequestLength= "4096000" requestValidationMode ="2.0" />