Setting Request Limit on IIS7

We had a client trying to upload a 44mb file, and it was failing. The ColdFusion page that that did the upload had a very high timeout setting, so I didn't think that timeout was the issue. The ColdFusion administrator had a request limit set of 100MB (which I believe is the default). What was up?

It took a bit of googling to realize that IIS7 (the webserver on our Windows 2008 Server), had a default request limit of 30MB. The solution is rather simple. With IIS7, a web.config file can be used to set a variety of webserver settings, so I added one to the site that was having the problem. Here are the contents of the file:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <security>
            <requestFiltering>
                <requestLimits maxAllowedContentLength="1024000000"/>
            </requestFiltering>
        </security>
    </system.webServer>
</configuration>

This sets the request size limit to 100MB, to bring it in line with ColdFusion. This isn't the only thing that can be controlled with web.config. For some information on how to tighten security on a site using web.config see this page: http://www.petefreitag.com/item/741.cfm

Posted on May 3, 2010 1:44:47 PM EDT by David Hammond

Comments

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