Fixing File Upload Size Limit in IIS 7
Posted by Johan Cyprich on 19 Jun 2008 | Tagged as: How To
Windows 2008 Server and IIS 7 proved to be a real challenge in moving my old IIS 5 applications that were running on Windows XP Pro. Just when I thought everything was running smoothly, I ran into a file size upload limit which I thought I had already adjusted.
In the older IIS, I added the following code to <system.web> in the web.config file in the web application’s folder:
<httpRuntime
executionTimeout=”100000″
maxRequestLength=”2000000″ />
This allows a file upload of 2,000,000 kilobytes and it will time out after 100,000 seconds, or 27.8 hours. I think that if someone spends more than 28 hours uploading a file, they should send me a DVD instead.
Adjusting File Size Limit in IIS 7
The problem is that in IIS 7 on Windows 2008 Server, the web application will reject any file that is larger than 30 MB. This is a default limitation of IIS. You can increase the maximum file size by adding the following code to <system.webServer> in the web.config file:
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength=”2000000000″ />
</requestFiltering>
</security>
With the above maxAllowedContentLength, users can upload files that are 2,000,000,000 bytes in size. This setting will work right away without restart IIS services.
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4 Comments »
on 03 Feb 2009 at 12:37 pm 1.Steve said …
Thanks! Everyone else is having you edit the metabase with cryptic commands that alter the system configs while you have show a simple change to the web.config file. Much superior way!
on 06 Feb 2009 at 12:02 pm 2.Johan Cyprich said …
Learning how web.config works will help you administer IIS better. There isn’t much available online with this information.
on 20 Jun 2009 at 7:11 am 3.Salem5 said …
Thank you, way to go. Why ever I have to change that one file a hundred times, is way beyound me. always having to alter my files (espescially the web.config) after writing them in that visual studio development server is a pain.
on 31 Jul 2009 at 6:16 pm 4.whitesites said …
Thanks for the tip. Finally someone that shows you a simple way to get this done, instead of long DOS commands. You Rock!