Large Files + Server 2008 = 404 error

bcaauwe — Thu, 04 Dec 2008 14:02:00 GMT

Just the other day I was looking into an interesting SharePoint issue where the user was experiencing a generic 404 error when trying to upload a document that was over 30MB, but their SharePoint settings on the web application was set to over 100MB. Also, if they were trying to upload documents (over 30MB) through the Multiple Document Upload procedure, it would look like the document upload process was running normally until the page refreshed and no new documents were showing in the library.

After looking around for a while I came across this knowledge base article that explained everything:

http://support.microsoft.com/kb/944981

It looks like in Server 2008 (or more importantly IIS 7.0), Microsoft mysteriously put a cap on the Max Content Length for a web request, so in order to circumvent the issue you are able to put an extra entry in your web.config like this:

<system.webServer>

</requestFiltering>

</security>

</system.webServer>

The value for the maxAllowedContentLength property is setting the maximum file size of an uploaded file in bytes. You should make sure to set this value LARGER than your maximum document upload file size in SharePoint otherwise you will see those friendly 404 errors.

["Brian"]

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Large Files + Server 2008 = 404 error