Service Unavailable when Accessing Localhost and OWA

Hi
I have Windows 2003 Server with SP2 x64 as a Domain Controller with Exchange Server 2007 installed on it, i am trying to make the OWA site works while as long as i access any of the following websites
http://localhost
http://localhost/owa
always getting the page with Service Unavailable.

i Tried to investigate the issue and i found that the Default AppPool is Stopped and i noticed that if i resterted the pool and then as soon as i access any of the above websites the pool got disabled automatically.

i Tried to Reinstall Winsows 2003 SP2 but still facing the same issue.

Can Someone help me to solve this issue.

Regards
nadermikAsked:
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v_9mhdrfCommented:
Please switch 32 bit .net to 64 bit by following the below mentioned kb-

http://support.microsoft.com/?id=894435

Please post the app and system logs errors Event ids.

Thanks
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nadermikAuthor Commented:
Hi
I also tried to access the application log (with the administrator account) while it gave me error as access denied
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nadermikAuthor Commented:
Hi

I have followed the above steps but still the same issue happens can you please guide me how i can proceed further

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Shreedhar EtteCommented:
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nadermikAuthor Commented:
Hi

i Tried this the above solution and still facing same issue, actually when i am browsing localhost i am still getting same message,
also i noticed one thing on the server that the following Dot net framework installed

.NET Framework 2.0 SP 2
.NET Framework 3.0 SP2
.NET Framework 3.5 SP1

hope this gives indication of the status

also the DefaultAPPPool is getting disabled automatically as soon as i try to access the localhost or localhost/owa
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Shreedhar EtteCommented:
Hi,

Refer this article:
http://support.microsoft.com/kb/885654

I hope this should fix the issue,
Shree
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nadermikAuthor Commented:
Hi
I am trying to follow the steps in the article mentioned and while trying to Identify any required registry keys that do not have sufficient permissions. To do this, you can use a tool such as Sysinternals Regmon. mainly i didnt find this tool as it is replaced by Process Monitor tool and i am not able to identify the registry keys that do not have suffiicient permission

How you can help me with that

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Shreedhar EtteCommented:
Hi,

Refer this article also:
http://support.microsoft.com/kb/894435/en-us

I hope this helps,
Shree
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