Hello,I have installed Microsoft MobileAdmin on an Windows Server 2003 (x86) server with Exchange 2003 SP2 installed. When I use the MobileAdmin website, I am able to find devices, I can block and unblock them, but when I try to wipe them, I receive the following error:Server Error in '/MobileAdmin' Application.--------------------------------------------------------------------------------Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [NullReferenceException: Object reference not set to an instance of an object.] Microsoft.Exchange.AirSync.Admin.Mailbox.getDevices() +742 Microsoft.Exchange.AirSync.Admin.Devices.refreshDevicesTable() +138 Microsoft.Exchange.AirSync.Admin.Devices.Page_Load(Object sender, EventArgs e) +190 System.Web.UI.Control.OnLoad(EventArgs e) +67 System.Web.UI.Control.LoadRecursive() +35 System.Web.UI.Page.ProcessRequestMain() +750I already checked several documents from the Internet, and everything that is recommended seems to be ok.Does anyone have experience with this problem and how to solve it?Thank you very much for your time and help.Kind regards,Johan F. Hendriks

Did you ever find a solution? I'm having the same issue.

I am having the same issue as well. Did you ever find a solution?

Accessing the Exchange Server ActiveSync Web Administration Tool If you cannot access the Web site for the Exchange Server ActiveSync Web Administration tool, perform the following: On the server, open Internet Information Services (IIS) Manager, and then ensure that there is only one default Web site in IIS Manager. When the tool is installed, a duplicate default Web site is created if your original default Web site is bound to a specific IP address. To remove the duplicate default Web site, you can use either of the following two methods: OptionA: a. Uninstall the tool. b. Change the IP address settings of the original default Web site to All Unassigned. c. Install the tool again. d. Revert the IP address settings of the default Web site back to the original values. OptionB: a. Create a new virtual directory in the original default Web site. b. Export the settings from the duplicate default Web site. c. Import the settings to the new virtual directory in the original default Web site. d. Delete the duplicate default Web site created by the tool. Check the settings of the ExAdmin virtual directory to ensure that SSL is not required. To check the settings of the ExAdmin virtual directory 1. In Internet Information Services (IIS) Manager, expand Default Web Site, right-click ExAdmin, and then click Properties. 2. On the Directory Security tab, in the Secure Communication section, click Edit. 3. Ensure that the Require secure channel (SSL) check box is cleared. Ensure that the MobileAdmin virtual directory is running in the Exchange Application Pool. To ensure that the MobileAdmin virtual director is running in the Exchange Application pool 1. In Internet Information Services (IIS) Manager, expand Default Web Site, right-click MobileAdmin, and then click Properties. 2. On the Virtual Directory tab, in Application Pool, select ExchangeApplicationPool.