Thursday, November 14, 2013

Application pool keeps stopping / Service Unavailable / 503 errors in SharePoint Site

Application pool keeps stopping / Service Unavailable / 503 errors in SharePoint Site

I face this Issue so many times in my experience, Every time someone changes Password for service account; it keeps prompting errors, while we open the site. So, thought to share useful who faces the same issue.                                     

Cause: Changing of Password for the Application pool Account.

  Solution 1: To change\check the identity for an application pool, log into Central Administration and follow these steps:

               Changing application pool id in IIS is recommended way

1.      Select the application pool from the components drop-down

2.    Select the managed account that you want to use as the identity for this application pool, or register a new managed account in SharePoint 2010, using the Register a new managed account link.

3.    Click the OK button.

 You’ll be warned that this action requires an IIS reset on all servers, click OK.
 Perform iisreset /no force on all WFE servers in the farm.

 The Above Doesn’t Resolve The issue

Solution 2: If you check the eventvwr,you find log Error in it:

 Error: “The Module DLL 'C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\isapi\owssvr.dll' could not be loaded due to a configuration problem. The current configuration only supports loading images built for a x86 processor architecture “Please follow the below steps to overcome the issue.

1.   Open IIS by typing inetmgr in RUN.

2.   Click on Application pools

3.   Click on particular Application pool for your site

4.   Right Click Advance settings

                    5.   Set Enable 32-bit applications to false


  Solution 3: Manually Put the changed PWD in Application Pool. Do IIS reset.

                                    App pool->advanced settings->

Please Comment if you need Any Help. I Am Happy to Help !!!!!

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Your feedback is Much Appreciated. I will try to reply to your queries as soon as possible!!Anil Avula

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