Released: March 2024 Exchange Server Security Updates

Srinivas1730, we will likely be reminded that this is not a support forum.

That said, on your front-end Exchange server(s), in the webroot (c:\inetpub\wwwroot for me), try editing your web.config file to include an "alternateHostName" attribute in the XML element for system.webServer/serverRuntime, pointing to the external FQDN (hostname) of your Exchange server.

Mine looks like this (replace "host.domain.com" for your environment):

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

  <location inheritInChildApplications="false">
    <system.webServer>
      <serverRuntime appConcurrentRequestLimit="65535" uploadReadAheadSize="0" alternateHostName="host.domain.com" />
      <modules>
...

If this does not correct your issue, I would seek support elsewhere.

Thank you.