Http Error 503. The Service Is Unavailable. Virtual Server
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Join them; it only application pool keeps stopping takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top HTTP Error 503 - Service is unavailable (how fix?) https://support.microsoft.com/en-us/kb/2619402 up vote 0 down vote favorite i have a web site for download mobile files and there many users in my web site. sometimes i have the error below : HTTP Error 503 - Service is unavailable 1-so why this error happens and what is that mean? 2-as i know appache free up itself when it's oveloaded, but what about iis? how can i put some limitations in my server (i have remote access to http://serverfault.com/questions/335257/http-error-503-service-is-unavailable-how-fix my server) for prevent this error happening? a.is limitation of dowload's speed efficient for prevent that error's occur? how can i do that? is squid useful for this job or i can do that with another iis extension. b.is limitation of download's Bandwidth efficient for prevent that error's occur? how can i do that (with iis or another extension)? in right side of iis -> configure area -> i found some limits. what do those limits mean and can i use them for keep my server alive all the time? EDIT: after viewing event viewer of windows -> custom views -> server rols -> web server (iis) i figure out there is no error in that area. but many warnings and information. the latest warnings and information are like below : warning A worker process '2408' serving application pool 'ASP.NET 4.0 (Integrated)' failed to stop a listener channel for protocol 'http' in the allotted time. The data field contains the error number. warning A process serving application pool 'ASP.NET 4.0 (Integrated)' exceeded time limits during shut down. The process id was '6764'. warning A worker process '3232' serving application pool 'ASP.NET 4.0 (Integrated)' failed to stop a listener channel for protocol 'http' in the allotted time. The data field contains the error number. warning A process serving application pool 'ASP.NET 4.0 (Integrated)' exceeded tim is a common and frustrating problem that may occur for a number of reasons after a configuration change, or when deploying a http://mvolo.com/where-did-my-iis7-server-go-troubleshooting-503-quotservice-unavailablequot-errors/ 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 https://support.wdc.com/KnowledgeBase/answer.aspx?ID=10492 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 http error demo at www.leansentry.com. What is it? 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 the service is an IIS worker process. These include invalid application pool 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 thi Services Warranty Policy Data Recovery Shipping Addresses Warranty Status Product Replacement RMA Status My Support My Support Portal Product Registration Ask a Question RMA Status Product Replacement Product Support My CloudMy BookMy PassportWD Elements & WD TVInternal DrivesWDLabsLegacy & Other Products Downloads WD Software Product Firmware Product Downloads Warranty & Returns Warranty Services Warranty Policy Data Recovery Shipping Addresses Warranty Status Product Replacement RMA Status My Support My Support Portal Product Registration Ask a Question RMA Status Product Replacement WD Community Search English Return to WDC.com Welcome to WD Support Filter your search My Cloud My Book My Passport WD Sentinel WD TV WD Elements Internal Drives Software Legacy Products Error: "HTTP error 503. The service is unavailable." occurs during the first time setup of a WD Sentinel RX4100 or DX4000 Answer ID 10492 This article explains how to resolve error 503 that occurs when performing the first time setup of a WD Sentinel DX4000 and RX4100.*END <-- --> Problem: During the first time setup process of the WD Sentinel DX4000 or WD Sentinel RX4100, error message HTTP error 503. The service is unavailable. appears on the screen preventing the completion of the process. This error can also appear in cases where the server has recently been recovered using the Server Recovery ISO. Cause: An expired certificate causes some of the Microsoft services not to start properly, causing users to encounter an HTTP 503 error, even when installing the server from out of the box. This occurs on WD Sentinel DX4000 with software version 1.5.8.31 or older, and with WD Sentinel RX4100 running software version 1.6.7.22. Solution: Avoid using Server Recovery version 1.5.8.31 or earlier for WD Sentinel DX4000 and/or version 1.6.7.22 or earlier for WD Sentinel RX4100 when performing a Server Recovery. When encountering the HTTP 503 error, perform a Server Recovery on the unit using the latest available Server Recovery ISO from WD Support site. To perform the find the Recovery image and perform the Server Recovery, please follow the steps below: Download, install, and setup the DVD Emulator software on to the Client PC in the same network as the WD Sentinel DX4000 or RX4100. For information on how to setup the DVD Emulator software, please visit Answer ID 8561: Using 'Virtual CD' software to mount the recovery DVD for a WD Sentinel DX4000 or WD Sentinel RX4100. Download the appropriate regional ISO image on the Client PC for the respective product from the links below: ServerHttp Error 503. The Service Is Unavailable. Localhost