Error 503 Iis 7.0
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is a common and frustrating problem that may occur for a number of reasons after a configuration change, or when deploying a new server machine. Another common "what the hell just happened" error is the plain 503 “service available” error that looks like this: Update: We recently launched a service that significantly helps you understand, troubleshoot, and improve IIS and ASP.NET web applications. If you regularly troubleshoot IIS errors, manage Windows Servers, or tune ASP.NET performance, definitely check out the demo at www.leansentry.com. What is it? http://stackoverflow.com/questions/13322937/iis-http-error-503-the-service-is-unavailable This error is generated by the WAS (formerly W3SVC) service, which is responsible for creating IIS worker processes to handle incoming http requests. When WAS fails to create a worker process, it will generate this error. Why does it happen? There are a number of reasons why WAS may fail to start an IIS worker process. These include invalid application pool http://mvolo.com/where-did-my-iis7-server-go-troubleshooting-503-quotservice-unavailablequot-errors/ configuration, failure to create the process due to incorrect application pool identity settings, bad IIS configuration that causes the worker process to fail to initialize, or a process crash due to application logic. I will list the most probable reasons and how to investigate / fix them below. How do I get rid of it? Let’s get rid of it in 4 easy steps: STEP 1: Check whether your application pool is stopped Once WAS fails to start your worker process a set number of times, it goes into Rapid Fail Protection Mode and stops the application pool. This prevents application crashes from taking down the machine by going into a start process / fail loop when a persistent error exists. By default, Rapid Fail Protection is set at 5 times in 5 minutes. Once the application pool that contains your application has been stopped, all requests to applications in it will result in that plain 503 error. So, that’s the first thing we check: > %systemroot%windowssystem32inetsrvAppCmd.exe list apppools If your application pool is stopped, then we are on the r
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one or two months. But today, when I try connect my Web Application thorough URL I got the HTTP error page with the message HTTP Error 503. The service is unavailable. Cause of HTTP Error 503. The service is unavailable: After I have analyzed some time, found the reason. The HTTP Error 503. The service is unavailable occurs if the Application Pool of the corresponding Wep Application is Stopped or Disabled or Paused. Check the following two Fix/Solutions to resolve this issue. Fix/Solution 1: Start/Enable Application Pool Fix/Solution 2: Reset Identity of Application Pool Steps to fix HTTP Error 503. The service is unavailable: Solution 1 1. Open the Internet Information Services (IIS) by running the command inetmgr 2. Expand the Root node, expand Sites, and right-click on your Application, click Manage Web Site ->Advanced Settings 3. Note down the Application Pool name under General settings and close the window 4. Now go to Application Pools section, here you can see the corresponding Application Pool is in Stopped state. right-click on the Application Pool and Start it, also restart your Web Application. 5. Now your problem would be solved, if not solved then check the below solution. Fix HTTP Error 503. The service is unavailable: Solution 2 Issue may be solved for some of them after completed the above steps. But in my case, I have started Application Pool, then I restarted my Web Application. Then when I connect my webpage, once again I got the same problem, then I went to further analyze from the event log. I found three System Events, Event ID 5021, Event 5057, Event 5059. Event ID 5012 Source: Source: Microsoft-Windows-WAS Event ID: 5021 Level: Warning Description: The identity of application pool AuditAppPoolV4 is invalid. The user name or password that is specified for the identity may be incorrect, or the user may not have batch logon rights. If the identity is n