Out Of Office error ++ Exchange 2010 SP3 just installed sbs2011

Question

Hello
Just recent tried to install sp1 for Exchange 2010, this failed, and ended up in installing SP3, and this went ok.
Ok, by meaning, the installation itself went OK, but the former SP1 isntallation broke a couple of things, and some was adopted to the SP3 isntalaltion.
The main issue now, is that OOF does not work.
Application log:
Event code: 3008 
Event message: A configuration error has occurred. 
Event time: 20.09.2014 01:20:01 
Event time (UTC): 19.09.2014 23:20:01 
Event ID: 93ea814206eb4f118aa76ae313723983 
Event sequence: 2 
Event occurrence: 1 
Event detail code: 0 
Application information: 
    Application domain: /LM/W3SVC/1/ROOT-1-130556424012983549 
    Trust level: Full 
    Application Virtual Path: / 
    Application Path: C:\inetpub\wwwroot\ 
    Machine name: SERVER 
Process information: 
    Process ID: 640 
    Process name: w3wp.exe 
    Account name: NT AUTHORITY\NETWORK SERVICE 
Exception information: 
    Exception type: ConfigurationErrorsException 
    Exception message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level.  This error can be caused by a virtual directory not being configured as an application in IIS. (C:\Program
Files\Microsoft\Exchange Server\V14\ClientAccess\owa\web.config line 37)
   at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
   at System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject)
   at System.Configuration.BaseConfigurationRecord.GetSection(String configKey)
   at System.Web.Configuration.RuntimeConfig.GetSectionObject(String sectionName)
   at System.Web.Configuration.RuntimeConfig.GetSection(String sectionName, Type type, ResultsIndex index)
   at System.Web.Configuration.RuntimeConfig.get_Identity()
   at System.Web.HttpContext.SetImpersonationEnabled()
   at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)
Request information: 
    Request URL: https://localhost:443/Exchange 
    Request path: /Exchange 
    User host address: ::1 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: NT AUTHORITY\NETWORK SERVICE 
Thread information: 
    Thread ID: 9 
    Thread account name: NT AUTHORITY\NETWORK SERVICE 
    Is impersonating: False 
    Stack trace:    at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
   at System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject)
   at System.Configuration.BaseConfigurationRecord.GetSection(String configKey)
   at System.Web.Configuration.RuntimeConfig.GetSectionObject(String sectionName)
   at System.Web.Configuration.RuntimeConfig.GetSection(String sectionName, Type type, ResultsIndex index)
   at System.Web.Configuration.RuntimeConfig.get_Identity()
   at System.Web.HttpContext.SetImpersonationEnabled()
   at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)
Custom event details: 
And if i browse to https://localhost/Exchange on the SBS2011 server i get:
Server Error in '/' Application.
Runtime Error
Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed.
Details: To enable the details of this specific error message to be viewable on the local server machine, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current
web application. This <customErrors> tag should then have its "mode" attribute set to "RemoteOnly". To enable the details to be viewable on remote machines, please set "mode" to "Off".
<!-- Web.Config Configuration File -->
<configuration>
<system.web>
<customErrors mode="RemoteOnly"/>
</system.web>
</configuration>
Notes: The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the application's <customErrors> configuration tag to point to a custom error page URL.
<!-- Web.Config Configuration File -->
<configuration>
<system.web>
<customErrors mode="On" defaultRedirect="mycustompage.htm"/>
</system.web>
</configuration>
Tried a  couple of things in IIS, amongst Set Application Pool .NET to 2 from 4
But i am not a IIS guy, so i am out of luck here, and hope some one may help.
Best regards.

Answer 1

Found something, regardig OOF error.
My Autodiscover is configured:
[PS] C:\Windows\system32>Get-WebServicesVirtualDirectory |fl identity,internalurl,externalurl
Identity    : SERVER\EWS (Default Web Site)
InternalUrl : https://remote.domain.no/EWS/Exchange.asmx
ExternalUrl : https://remote.domain.no/EWS/Exchange.asmx
And when i test via the Outlook Test E-mail AutoConfiguration it fails:
Autosearch to https://remote.domain.com/Autodiscover/Autodiscover.xml Fails (0x800C8203)