Event ID - 1048

Event Id1048
SourceW3SVC
DescriptionThe application / belonging to site SiteName has an invalid AppPoolId CentralAdminAppPool set. Therefore, the application will be ignored.
Event InformationWhen you run Setup to install Microsoft Office SharePoint Portal Server 2003, after you follow these steps 
Specify the user account that you want to use as the configuration database administration account on the Microsoft Office SharePoint Portal Server 2003 page that requests account information.
Click Next on the Install Microsoft Office SharePoint Portal Server 2003 page.
Click Finish on the Completing the Microsoft Office SharePoint Portal Server 2003 Setup Wizard page.
you may find that Setup does not display the Configure Server Farm Account Settings page. 
Addtionally you will get this event in application event viewer. 
CAUSE :
This issue occurs if the user account that you configured as the configuration database administration account in the Account name box of the Microsoft Office SharePoint Portal Server 2003 page is specified incorrectly. This issue may occur if either one of the following conditions is true: 
You configure a local user account as the configuration database administration account, but you do not specify the user account by using the ServerName\UserAccount format. 
You configure a domain user account as the configuration database administration account, but you do not specify the user account by using the Domain\UserAccount format. 
RESOLUTION :
To resolve this issue, remove and then reinstall SharePoint Portal Server 2003 on the server.
Reference Links The Configure Server Farm Account Settings page is not displayed and the SharePoint Central Administration site is not configured correctly when you run SharePoint Portal Server 2003 Setup

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