503 Error record in event log when try to login Storefront

503 Error record in event log when try to login Storefront

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Article ID: CTX584209

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Updated On:

Description

"Unable to complete your request" error when logging into the Storefront.
The operating system event log may record a 503 error as below.

LogName: Citrix Delivery Service

Source Name: Citrix Receiver for Web

Event id: 1

Log Description
The remote server returned an error: (503) Server Unavailable.

 

Environment

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Resolution

Configure IIS Application Pool Identities.
  1. Open the IIS Management Console (INETMGR.MSC).
  2. Open the Application Pools node under the Machine node. Select the application pool that want to change to run under the automatically generated application pool logo.
  3. Right-click the application pool and select Advanced Settings
Screenshot of the Advanced Settings dialog with the Identity setting being highlighted.
  1. Select the Identity list item and click the ellipsis (the button with the three dots).
  2. The following dialog appears:
Screenshot of the Application Pool Identity dialog with the Application Pool Identity option being highlighted.
  1. Select the Built-in account button and select the identity type ApplicationPoolIdentity from the combo box.

To perform the same steps using the command line, use the appcmd command line tool as follows:

[Console]
%windir%\system32\inetsrv\appcmd.exe set AppPool <your AppPool> -processModel.identityType:ApplicationPoolIdentity

Problem Cause

IIS Application DEFAULT APP POOL is not Started or misconfigured.
Application Pool Permission is required for Storefront Access.
 

Additional Information

Application Pool Identities
https://learn.microsoft.com/en-us/iis/manage/configuring-security/application-pool-identities#configuring-iis-application-pool-identities

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