You may increase the maximum accepted content length by following these directions:
- Open Windows Explorer.
- Navigate to C:\Program Files\Microsoft\Exchange Server\ClientAccess\exchweb\ews
- Open the file Web.Config in a text editor such as Notepad.
- Go to the end of the file.
- Insert or edit the following XML code before the </configuration> tag:
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="104857600" />
</requestFiltering>
</security>
</system.webServer>
Note: If XML code is already present in the Web.Config file, edit it to match what is shown above.
Sample Web.Config before changes:
<configuration>
<system.web>
...
...
</system.web>
</configuration>
Sample Web.Config after changes:
<configuration>
<system.web>
...
...
</system.web>
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="104857600" />
</requestFiltering>
</security>
</system.webServer>
</configuration>