Hi,Is there any way to turn on or turn off WebDAV API access for Exchange server 2007 and 2003?

Hi Tamal, WebDAV is an IIS extension so you may check in IIS Forum to get better answer. Be aware that some of the functionalities of OWA, OMA and ActiveSync depend on it. Here is some information about how to enable/disable it in IIS. IIS5: Check below article.. How to disable WebDAV for IIS 5.0 http://support.microsoft.com/default.aspx?scid=kb;en-us;241520&sd=tech IIS 6/7: You can enable or disable WebDAV with the Web Service Extensions node in IIS Manager. You may also block the WebDAV verbs at network level (with firewall) or with URLScan utility instead of disabling it. Some of the references are below. How to configure the URLScan Tool http://support.microsoft.com/kb/326444 IIS lockdown and URLscan configurations in an Exchange environment http://support.microsoft.com/kb/309508/ IIS Forum: http://forums.iis.net/

Hi Amit,Thanks. I hope that these links are pointing me towards the solution.