I am still receiving 404 errors during addition of larger files (~40MB) to my WSS 3.0/SP2 site. According to the IIS logs, the errors are POST 404.13 errors. I've set the maximum upload size to 100 MB in SharePoint Central Administration as well as added the following to C:\Inetpub\wwwroot\wss\VirtualDirectories\xxxxx\web.config immediately above the closing /configuration element as indicated in http://support.microsoft.com/kb/925083/: <system.webServer> <security> <requestFiltering> <requestLimits maxAllowedContentLength="524288000" /> </requestFiltering> </security> </system.webServer></configuration> I have also added the executionTimeout attribute as shown below in the same web.config file: <httpRuntime executionTimeout="999999" maxRequestLength="51200" /> as well as the executionTimeout attribute to the httpRuntime element in the upload.aspx location of ..\12\TEMPLATE\LAYOUTS\web.config: <httpRuntime executionTimeout="999999" maxRequestLength="2097151" />. Timeouts should not be an issue as the client is connect to the server by a gigabit LAN on the same network segment. The server is WS2008 SP2/x86. I have restarted the server and still cannot upload these files. Does anyone have suggestions? Thanks.

Silly questions: implemented this change all servers hosting sharepoint? have you restarted your server(s)? Try uploading documents with varying file sizes: 1MB, 10MB, 25MB, 50MB

This is the only WSS server we have. I have rebooted the server. Smaller files can be uploaded by larger ones fail. I have a 22MB file that uploads and a 35MB file that does not. So I suspect that it has to do with the 28MB limit. Further, the 404.13 error in IIS indicates content is too large.

Have you tried the documents via the explorer view?

Same failure in Explorer view for the large file.

Hi, This problem occurs because the client request contains a Content-Length header that is larger than the value that is specified for this header in the maxAllowedContentLength property in the ApplicationHost.config file. You can refer to the following article to add a value that matches the size of the Content-Length header that the client sends as part of the request. By default, the value of the maxAllowedContentLength property is 30000000 bytes(almost 28 M). Error message when you visit a Web site that is hosted on a server that is running Internet Information Services 7.0: "HTTP Error 404.13 - CONTENT_LENGTH_TOO_LARGE" http://support.microsoft.com/default.aspx/kb/942074/en-us Hope this helps. Rock WangRock Wang MSFT

But didn't my change in web.config as outlined in http://support.microsoft.com/kb/925083/ as described in the original post do that? How does the ApplicationHost.config file relate to the web.config file?

My fault--I was changing the wrong web.config file.