CRM 4.0 IIS 7.x The specified Microsoft Dynamics CRM Server is not available
You many experience the following error when attempting to configure your CRM 4.0 outlook client against your CRM 4.0 Server running on IIS 7.x:
“The specified Microsoft Dynamics CRM Server is not available. Make sure that the URL is correct. To test the URL, try opening it in Internet Explorer”
You may also see 401 errors when capturing a netmon (or equivalent) trace.
If your CRM website is setup to run under an IIS Application Pool whose identity is a domain user (rather than one of the built-in accounts), then there is a further setting in IIS you must configure within the ApplicationHost.config file:
· Within IIS Manager, select your CRM Website
· Under the Management section, double click Configuration Editor
· Click the Section dropdown list and navigate to system.webServer>>security>>authentication>>windowsAuthentication
· For the entry useAppPoolCredentials, set this value to true.
· Save this configuration
· Perform an IISRESET
In conjunction with the above you should also confirm the following:
· Kernel Mode Authentication is enabled
· You have the relevant SPNs set against the user account you are using for the Application Pool Identity. These should be in the form:
http/<crmserver> and
http/<crmserver.fully-qualified-name>
Where crmserver could be the host name of the machine or a host header value.
Also see below for Service Principal Name (SPN) checklist for Kerberos authentication with IIS 7.0/7.5:
For configuring Windows authentication see below link:
https://technet.microsoft.com/en-us/library/cc754628(WS.10).aspx
Best Regards
Dynamics CRM Team