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I have a small SharePoint farm with 2 internal WFE servers and one in DMZ. In the last couple of days I had a situation twice where the DMZ server returned a “HTTP Error 503. The service is unavailable”. I found the following error in the logs:<br />
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<pre><code id="code-10-28333771-1">Log Name:      System
Source:        Microsoft-Windows-WAS
Event ID:      5013
Level:         Warning

Description:
A process serving application pool 'app_pool_name' exceeded time limits during shut down. The process id was 'XXXX'.</code></pre>
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Doing the iisreset fixed the problem in both situations. Any idea why this is happening and how to fix it? Is the server really performing a shutdown? Why?
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I have a small SharePoint farm with 2 internal WFE servers and one in DMZ. In the last couple of days I had a situation twice where the DMZ server returned a “HTTP Error 503. The service is unavailable”. I found the following error in the logs:

(CODE)

Doing the iisreset fixed the problem in both situations. Any idea why this is happening and how to fix it? Is the server really performing a shutdown? Why?

Event ID 5013 on a DMZ WFE SharePoint server

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.

Microsoft IIS Web Server

Microsoft Sharepoint is a software platform and family of software products used for collaboration and web publishing combined. These capabilities include developing web sites, portals, intranets, content management systems, search engines, wikis, blogs, and other tools for business intelligence and collaboration. SharePoint has a Microsoft Office-like interface, and it is closely integrated with the Office suite.