If you are using IIS for hosting your application, then the default upload file size if 4MB. To increase it, please use this below section in your web.config –
<configuration> <system.web> <httpRuntime maxRequestLength="1048576" /> </system.web> </configuration>
For IIS7 and above, you also need to add the lines below:
<system.webServer> <security> <requestFiltering> <requestLimits maxAllowedContentLength="1073741824" /> </requestFiltering> </security> </system.webServer>
maxAllowedContentLength is measured in bytes while
maxRequestLength is measured in kilobytes, which is why the values differ in this config example. (Both are equivalent to 1 GB.)
I don’t think it’s been mentioned here, but to get this working, I had to supply both of these values in the web.config:
<httpRuntime maxRequestLength="1048576" executionTimeout="3600" />
<security> <requestFiltering> <requestLimits maxAllowedContentLength="1073741824" /> </requestFiltering> </security>
IMPORTANT : Both of these values must match. In this case, my max upload is 1024 megabytes.
maxRequestLength has 1048576 KILOBYTES, and maxAllowedContentLength has 1073741824 BYTES.
I know it’s obvious, but it’s easy to overlook.