AppOffline DefaultAppPool

[SJMP]

Can someone point me in the direction I am getting Service Unavailable when
trying to access the CertSvr via IE - "Service Unavailable"

I checked the IIS logs - AppOffline DefaultAppPool -1002

I saw an error in the event log - 10016 DCOM - for IISADMIN I changed the
security from 'custom' to default - as this was a remedy for that error. I
restarted IIS - no change.

I am also having a problem accessing OWA on this server running Exchange
2003 SP2 - not sure if this is related but since it is also IIS I thought
maybe.

Any help would be greatly appreciated.

[David Wang]

Post by SJMP
Can someone point me in the direction I am getting Service Unavailable when
trying to access the CertSvr via IE - "Service Unavailable"
I checked the IIS logs - AppOffline DefaultAppPool -1002
I saw an error in the event log - 10016 DCOM - for IISADMIN I changed the
security from 'custom' to default - as this was a remedy for that error. I
restarted IIS - no change.
I am also having a problem accessing OWA on this server running Exchange
2003 SP2 - not sure if this is related but since it is also IIS I thought
maybe.
Any help would be greatly appreciated.

Check in the Event Log for why DefaultAppPool is offline and returning
503.

IISADMIN error cannot result in 503 because IISADMIN affects
inetinfo.exe, while 503 indicates a crash/unavailability in w3wp.exe.

Your logic is equivalent to "both applications run on the same
machine, so their errors may be related". Until you have a fact
linking OWA with the 503, they are not related.

You start on OWA's problem in the same way -- what HTTP status code is
being returned, and depending on the status code you check either IIS
log file, HTTP log file, or Event Log.

http://blogs.msdn.com/david.wang/archive/2005/12/31/HOWTO_Basics_of_IIS6_Troubleshooting.aspx


//David
http://w3-4u.blogspot.com
http://blogs.msdn.com/David.Wang
//

[WenJun Zhang[msft]]

Hi,

According to the DefaultAppPool 1002 error, could you please post the event
details here for me to take a look? Also is the built-in Network Service
account used as DefaultAppPool's identity in its property dialog of IIS
manager? If a custom user account is used, has the custom been added into
local IIS_WPG group(verify this in Computer Management)?

To fix the 10016 DCOM error, please open Administrative Tools | Component
Services | Computers | My Computer | DCOMConfig. Right-click on
IISAdminService and select Properties | Security tab | Edit Launch and
Activiation permissions. Add the NETWORK SERVICE account(if you use a
custom account as the application pool's identity, add the custom account
here) and the Authenticated Users (including Local Acitvation and Remote
Activation).

- Then please restart IIS by running IISRESET command and check if the
error still persists.

I look forward to your update.

Thanks for using our TechNet newsgroup. Have a nice day.

Sincerely,

WenJun Zhang

Microsoft Online Community Support

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[WenJun Zhang[msft]]

Hi,

Just want to check if there is any update of this issue?

Thanks.

Sincerely,

WenJun Zhang

Microsoft Online Community Support

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[SJMP]

Event Type: Error
Event Source: W3SVC
Event Category: None
Event ID: 1002
Date: 8/23/2007
Time: 1:12:31 PM
User: N/A
Computer: GBMAIL01
Description:
Application pool 'DefaultAppPool' is being automatically disabled due to a
series of failures in the process(es) serving that application pool.

I made the changes you suggested and after restarting IIS I got this in my
event log

Event Type: Information
Event Source: IISCTLS
Event Category: None
Event ID: 6
Date: 8/23/2007
Time: 1:33:31 PM
User: N/A
Computer: GBMAIL01
Description:
IIS Reset encountered an error while stopping services, which was requested
by GREENBRIAR\administrator. The logged data is the status code. Since the
force option is on, IIS Reset will now terminate the services' processes.
This may cause SCM to report errors about the services exiting.

[WenJun Zhang[msft]]

The 1002 event indicates there appeared to be defective web applications
running in that application pool which results a series of failures and
therefore W3SVC service disabled that pool.

I also suspected the second iisreset error has relationship with the above
one. Some application pool instances might hang and failed to be shutdown
in an expected time period. That's why iisreset killed those worker
processes and then enforced the services restarting.

Has the previous 10016 DOM error been fixed after granting the Launch and
Activation permissions?

Have a great weekend.

Sincerely,

WenJun Zhang

Microsoft Online Community Support

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most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
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[WenJun Zhang[msft]]

Hi,

The 1002 error events indicate IIS application pool's worker prcess
instances are terminiated unexpectedly. Unfortunately, we are not able to
determine if the problem is on your web applications or something else.

To troubleshoot this kind of crash/hang issues, you have to report it as an
incident to our support service for telephone support. Since these kinds of
cases require capturing memory dump files for debugging, it's difficult to
perform a complicated debugging scenario in the newsgroup.

You can open an incident to your local support service for telephone
support and then a dedicated engineer will be assisgned to assist you on
the debugging scenario. The phone number of our CSS can be found in the
below link:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;PHONENUMBERS

If you are outside the US please see http://support.microsoft.com
for regional support phone numbers.

Thanks and have a nice day.

Sincerely,

WenJun Zhang

Microsoft Online Community Support

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professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
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handled working with a dedicated Microsoft Support Engineer by contacting
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