The specified file is larger than the maximum supported file size

This error occurs when user upload a file that size exceeding than the allowed limit. Normally SharePoint library allows only 50MB as default upload file size. If user wants to upload file that size more than 50 MB, the upload file size limit has to be increased in the Central Administration by Administrator.

Open the SharePoint2010 Central Administration. Click on Manage web application link which us under Application management section.

Select the web application that needs update on file upload size.

Navigate the General setting in the ribbon control for selected web application. Then click on General setting.

Now update the size in the maximum upload size input text box. And then click on Ok button. Note: The value for maximum upload size is invalid or out of range. The maximum value is 2047 MB