Msdn Http Error 503. The Service Is Unavailable
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17, 20102 Share 0 0 Symptoms So a co-worker of mine was setting up IIS 7.0 on a new Windows 7 machine, and when they http error 503. the service is unavailable. iis7 were browsing to http://localhost they were getting a 503 Service Unavailable error http error 503. the service is unavailable. iis application pool stops as shown here: Troubleshooting This seemed pretty trivial so I went through the following checklist. Is W3SVC started? iis application pool stops 503 Yes Is the Default Web Site started? Yes Is the Application Pool Disabled? No Is the Application Pool Started? Yes Is the w3wp.exe process for the application running? No Are
Http Error 503. The Service Is Unavailable. Sharepoint 2010
their any WAS or W3SVC Events in the Application or System Event logs? No Are their any entries in the IIS Log for the web site? No Are their any entries in the HTTP error logs? Yes 2010-02-17 17:28:47 ::1%0 49991 ::1%0 80 HTTP/1.1 GET / 503 - N/A - So what could be going on here? After a iis 503 error application pool stops bit of troubleshooting I was able to find a event in the event log that led me in the correct direction. Here is a summary of the event: Log Name: SystemSource: Microsoft-Windows-HttpEventDate: 2/17/2010 9:26:44 AMEvent ID: 15007Task Category: NoneLevel: InformationKeywords: ClassicUser: N/AComputer: computer.domain.comDescription:Reservation for namespace identified by URL prefix http://+:80/ was successfully added.Event Xml:
TrinderAugust 4, 20097 Share 0 0 One fine day, I thought of looking at new OOB modules in IIS and thought of first making sure that my IIS normal iis application pool keeps stopping pages are working fine or not. We ahead and tried
Http Error 503. The Service Is Unavailable. Localhost
browsing to normal iisstart.htm page under default website. To my surprise I found the following error when
Http Error 503. The Service Is Unavailable Windows Server 2012
browsing to iisstart.htm page. Service Unavailable ----------------------------------------------------- HTTP Error 503. The service is unavailable. -- Following is the snap-shot of the error message. Since I https://blogs.msdn.microsoft.com/webtopics/2010/02/17/a-not-so-common-root-cause-for-503-service-unavailable/ knew for sure that requests are not even reaching IIS server, so went ahead and looked in the HTTPErr logfile (found in location C:\Windows\System32\LogFiles). Found the following entries in it. #Version: 1.0 #Date: 2009-07-24 02:05:29 #Fields: date time c-ip c-port s-ip s-port cs-version cs-method cs-uri sc-status s-siteid s-reason s-queuename 2009-07-26 13:22:57 ::1%0 49161 ::1%0 https://blogs.msdn.microsoft.com/vpandey/2009/08/04/http-error-503-the-service-is-unavailable/ 80 HTTP/1.1 GET /iisstart.htm 503 1 AppOffline DefaultAppPool 2009-07-26 13:24:36 ::1%0 49162 ::1%0 80 HTTP/1.1 GET /iisstart.htm 503 1 AppOffline DefaultAppPool 2009-07-26 13:27:27 ::1%0 49163 ::1%0 80 HTTP/1.1 GET /iisstart.htm 503 1 AppOffline DefaultAppPool 2009-07-26 13:29:29 ::1%0 49165 ::1%0 80 HTTP/1.1 GET /time.asp 503 1 AppOffline DefaultAppPool So we could conclude that Application Pool was getting offline, but the reason for it was not clear. Decided to look into the event viewer, as the application pool was getting disabled, IIS would for sure log it in event viewer. Checked in the System event logs and found the following Log Name: System Source: Microsoft-Windows-WAS Date: 26-07-2009 06:29:29 Event ID: 5002 Task Category: None Level: Error Keywords: Classic User: N/A Computer: COMP2008 Description: Application pool ‘DefaultAppPool' is being automatically disabled due to a series of failures in the process(es) serving that application pool. Event Xml: