Exchange Server 2007 has a default maximum accepted request length of 13MB. You may increase the maximum accepted request length by performing the following:
- 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.
- Find the XML tag starting with maxRequestLength=
- Change the existing value to maxRequestLength="102400"
- Save the file.
Note: a value of 102400 represents 100 MBs in kilobytes.
Sample Web.Config before changes:
<configuration>
<system.web>
...
...
<httpRuntime maxRequestLength="13280" />
</system.web>
</configuration>
Sample Web.Config after changes:
<configuration>
<system.web>
...
...
<httpRuntime maxRequestLength="102400" />
</system.web>
</configuration>