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404 Error - Uploading file size greater than 30 MB

In our Web API, we can not upload fize size which is more than 30MB. We used to get 404 Error such as "404 - File or directory not found.
The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable."
By Googling and seeing various post, I tired the below changes in my config file:
Web.Config:
<system.web>
<httpRuntime maxRequestLength="204800" timeout="7200" />
</system.web>
<requestFiltering>
<requestLimits maxAllowedContentLength="209715200" maxQueryString="2097151" maxUrl="10999"/>
</requestFiltering>
But still, I could not upload file which is more than 30MB size. But the same code is working fine to upload file which is below 30 MB.
Any thing that i had missed here?

1.) Open IIS Manager.
2.) Select the website that you want to configure.
3.) Make sure you are in Features View per the button at the bottom of the manager.
4.) Select Requests Filtering and open it by double-clicking the icon. The Request Filtering pane displays.
5.) From the Actions pane on the right hand side of the screen click Edit Feature Settings... link. The Edit Request Filtering Settings window displays.
6.) In the Request Limits section, enter the appropriate Maximum allowed content length (Bytes) and then click the OK button.
Restart IIS.
This worked for me :)

Can you change your web.config to use system.webServer and security?
<configuration>
<system.web>
<httpRuntime maxRequestLength="204800" />
</system.web>
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="209715200" />
</requestFiltering>
</security>
</system.webServer>
</configuration>

Putting in what worked for me.
I had to make two changes:
update web.config with following settings:
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="209715200" />
</requestFiltering>
</security>
</system.webServer>
But using just this was not working for me. I had to add another attribute to API Controller to make it work.
[HttpPost]
//[DisableRequestSizeLimit]
[RequestSizeLimit(70_000_000)] //Files sizes upto 70 MB are allowed
My setup was Blazor WebAssembly template with ASP Hosted option. Hope this helps somebody.

AsyncFileUpload Content Security Policy Directive

I am trying to upload a file to an application i have built using the AsyncFileUpload part of the AjaxToolKit. The file is a 50mb ZIP file, when uploading i receive the following popup:
When i click OK i get the following box
If i then go into Developer tools i get the following error message in the console tab of chrome
The value for Content Security Policy directive 'object-src' contains an invalid character
Any help would be appreciated

It looks like you need to modify your Web.config like in this answer:
<configuration>
<system.web>
<httpRuntime maxRequestLength="1048576" />
</system.web>
</configuration>
or for IIS 7 or later:
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1073741824" />
</requestFiltering>
</security>
</system.webServer>

Unable to upload files into Godaddy server

When i try to upload the Image to the Godaddy , i'm only able to upload lesser size of images .
I have already used this in my web-config , but still i am unable to upload the larger files
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1073741824" />
</requestFiltering>
</security>

In you web config you need to add maxRequestLength in System.web along with the above config
Ex:
<httpRuntime maxRequestLength="600000" />

How to Upload Large files in Application Folder

In my application I'm uploading large audio files (upto 100MB). For that in my web.config file I have added:
<httpRuntime executionTimeout="90" maxRequestLength="150000" useFullyQualifiedRedirectUrl="false" minFreeThreads="8" minLocalRequestFreeThreads="4" appRequestQueueLimit="100" enableVersionHeader="true" />
With this code I'm uploading files successfully into my application folder. But when deployed in IIS and published locally, the files are not uploading and I'm getting this Error. How can i solve this issue?

In addition to the check specified in the httpRuntime node, I believe microsoft is now also checking the content length as part of the security filtering. You may be able to get past the size limits by adding the following node to your web.config
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="100000000" />
</requestFiltering>
</security>
</system.webServer>

Maximum request length exceeded iis 7

I appreciate this has been asked numerous times before, but i cannot seem to get this working.
I have the following values in my config file:
<httpRuntime maxRequestLength="16384" executionTimeout="7200" />
and
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="16777216" />
</requestFiltering>
</security>
</system.webServer>
I am however getting a maximum request length exception thrown.
The content length of my message is :Content-Length: 7785556
Can anyone suggest a setting i may have overlooked?

I had to add:
<httpRuntime maxRequestLength="16384" executionTimeout="7200" />
To my machine.config.

It depends on Framework version, under 2.0 httpRuntime works. On other Framework versions you should be using requestFiltering section to define this limit.

Check this microsoft support link
http://support.microsoft.com/default.aspx?scid=kb;EN-US;295626