Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

re: Where did my IIS7 server go? Troubleshooting "service unavailable" errors

Steve Schofield — Wed, 27 Dec 2006 23:56:43 GMT

Any recommendations in troubleshooting Classic ASP application pool crashes?

re: Where did my IIS7 server go? Troubleshooting "service unavailable" errors

Mike Volodarsky — Thu, 28 Dec 2006 05:06:44 GMT

Depends on what kind of problem you are experiencing ... are you seeing ASP application errors, or experiencing worker process crashes from custom COM components you are using from the ASP scripts?

The event log is a good source of data in the case of worker process crash, and should contain an event mentioning the offending DLL that caused the crash. If its your COM DLL, you may choose to debug it to see further why the error occurs.

re: Where did my IIS7 server go? Troubleshooting "service unavailable" errors

NiHique — Thu, 05 Apr 2007 10:01:10 GMT

thank you, your article was helpful in managing my problems with IIS7 and ASP.NET!

Service Unavailable Errors in IIS 7 Are Killing Me

you've been HAACKED — Sat, 19 May 2007 03:49:36 GMT

Service Unavailable Errors in IIS 7 Are Killing Me

re: Where did my IIS7 server go? Troubleshooting "service unavailable" errors

Haacked — Sat, 19 May 2007 03:52:04 GMT

Hi there, I tried everything in this article and nothing seems to work for me. I think something got fubar'd in my installation and I can't seem to figure out how to know for sure. Here's a post on everything I tried. http://tinyurl.com/2uuw8m Any ideas?

Service Unavailable Errors in IIS 7 Are Killing Me

Community Blogs — Sat, 19 May 2007 04:17:29 GMT

I am at my wits end trying to get IIS 7 to work on my Vista Ultimate box and I have tried everything

Troubleshooting IIS7 503 "Service unavailable" errors with startup debugging

ServerSide — Sat, 19 May 2007 16:32:20 GMT

In a previous post titled Where did my IIS7 server go? Troubleshooting "service unavailable"

Troubleshoot 503 Service Unavailable errors with start-up debugging

Mike Volodarsky's WebLog — Sat, 19 May 2007 16:50:20 GMT

In a previous post titled Where did my IIS7 server go? Troubleshooting "service unavailable" errors ,

Troubleshoot 503 Service Unavailable errors with start-up debugging

iis — Sat, 19 May 2007 17:00:12 GMT

In a previous post titled Where did my IIS7 server go? Troubleshooting "service unavailable" errors

Troubleshoot IIS7 errors like a pro

Mike Volodarsky's ServerSide — Fri, 27 Jul 2007 01:33:54 GMT

So you just moved your application to an IIS7 server, and now you are getting an error when you make

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Deb — Fri, 10 Aug 2007 17:28:00 GMT

I am having similar problems but my error is different. I am getting the following Application error just trying to browse the default web site: The worker process for application pool 'Integrated AppPool' encountered an error 'Cannot read configuration file ' trying to read global module configuration data from file '\\?\C:\Windows\system32\inetsrv\config\applicationHost.config', line number '0'. Worker process startup aborted. Source: IIS-W3SVC-WP Event ID: 2297 ... and then the dreaded 503 Service Unavailable error appears on the page. I am working on a fairly shiney new computer that shipped with Windows Vista Home Premium that was upgraded to Vista Ultimate last week. I tried getting IIS7 to launch a web page about a month ago and gave up but now I need to install and use Virtual Server 2005 R2 SP1 and I am stuck! I took a look at my applicationHost.config and administration.config files and I'm seeing squiggles under some of the attributes (that should be defined in DotNetConfig.xsd. For example, in applicationHost.config, in the System.webServer area, this line has a squiggle under overrideMode: When you mouse over it, "The overrideMode attribute is not declared" appears. In the area, forthe provider IISWASOnlyRSAProvide, all of the attributes are appearing as not declared: description, keyContainerName, cspProviderName, useMachineContainer, useOAEP This lead me to my machine.config file for a peek and there I noticed that the RSA provider stuff had squiggles. I had a backup copy of machine.config that was clean when I looked at it, but as soon as I made another copy of it my machine.config file, the squiggles came back. My 'clean' install files for applicationHost.config and machine.config are squiggleless. Any ideas?? As far as I know I had the same problem before the Ultimate upgrade, I just didn't drill down into the problem this far. If I can provide you with any other inforation, please let me know! Thanks a million... Deb

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Mike Volodarsky — Thu, 16 Aug 2007 01:36:19 GMT

Deb,

The Visual Studio schema for configuration files has not yet been updated for VS 2005 (it will be in Visual Studio codenamed Orcas), so its expected to see attributes in applicationHost.config that are not recognized by VS.

The error you are getting suggests that the worker process is completely failing to access the applicationHost.config file, due a permission or invalid XML problem. Copy applicationHost.config to applicationHost.xml and see if you can open it in IE without an error.

Also, please use ProcMon (http://www.microsoft.com/technet/sysinternals/utilities/processmonitor.mspx) to make sure that there arent any access denied errors while reading the file.

If you are still having issues after that, please post your applicationHost.config file and the eventlog error contents on forums.iis.net and we'll look at it further.

Thanks,

Mike

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Deb — Thu, 16 Aug 2007 16:46:25 GMT

Hi Mike,

Thanks for the info. I will try your suggestions and post on forums.iis.net if I'm still having trouble.

Deb

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Logic — Fri, 17 Aug 2007 11:19:33 GMT

Just go to Turn Windows Features On/Off and reinstall IIS and other related components. If else fails please contact Microsoft's IIS.NET and ASP.NET

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

All — Wed, 22 Aug 2007 10:18:21 GMT

Hi Mike I'm getting the following problem. Im running vista business ediition This is the error im seeing in the application log The Module DLL 'C:\Windows\System32\inetsrv\compstat.dll' could not be loaded due to a configuration problem. The current configuration only supports loading images built for a x86 processor architecture. The data field contains the error number. To learn more about this issue, including how to troubleshooting this kind of processor architecture mismatch error, see http://go.microsoft.com/fwlink/?LinkId=29349.

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Reda — Wed, 19 Sep 2007 10:50:20 GMT

Hi Mike I get the same error messages you were getting. When I checked my spelling, it was all fine. Any suggestions please? R

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Craig — Thu, 04 Oct 2007 06:37:54 GMT

I have the exact same problem as Deb above. Deb did you find a solution? The config file can be displayed in IE and I don't see anything off hand in procmon. Same issue - Had Vista Premium, upgraded to Ultimate and suddenly IIS goes kablooey.

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Alexxx — Thu, 04 Oct 2007 19:23:06 GMT

I recieve an initialization problem regarding this dll: The Module name iisfcgi path C:\Windows\system32\inetsrv\iisfcgi.dll returned an error from registration. The data is the error. I believe it is related to "FastCGI" an addon for IIS which is supposed to improve performance particularly for PHP. The file is there, but, how would i go about diagnosing this problem further?

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Mike Volodarsky — Sat, 06 Oct 2007 06:24:15 GMT

Alex,

Go to the Details tab when viewing the event in the event viewer, and find the <data>X</data> value. "X" will be the win32 error code that corresponds to the issue you are hitting - you should post it on the iis.net forums for us to take a look.

Thanks,

Mike

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Mike Volodarsky — Sat, 06 Oct 2007 06:27:05 GMT

Craig,

What exact error are you seeing when you make the request to the server? Are there any errors in the application event log?

Thanks,

Mike

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Darryl Brooks — Tue, 23 Oct 2007 20:39:06 GMT

This is by far the most useful info I have found so far on this error. My problem is I am being hosted on a shared server. Therefore, no OS or IIS solutions will work. Can anyone point to particular coding issues (I am using ASP with vbscript) that I can modify to minimize this error? The apps that cause it have been running for years without a problem prior to IIS7. I can change the code any way I need to, just not sure what might cause it. I am closing and setting to nothing each object I used. Any help appreciated.

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Mike Volodarsky — Thu, 25 Oct 2007 14:59:13 GMT

Darryl,

The 503 error is typically caused by changes to server-level configuration (such as native modules being loaded in the worker process). It should not occur from any page code or web.config errors (unless those errors are causing an AV).

Another possible cause is your application being overwhelemed with requests to the point where the http.sys queue is completely filling up.

There isn't really much you can do if you are on a shared server, because this is a server-level condition. You have to ask for support from the hoster to diagnose and track down the issue.

Thanks,

Mike

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Kevin Morris — Mon, 29 Oct 2007 05:07:50 GMT

Mike, I'm also getting the "worker procesas failed to initialize correctly...." message.. My event viewer shows - - 2276 0 2 0 0 0x80000000000000 6857 Application blue Any ideas? Thanks Kevin

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Kevin Morris — Mon, 29 Oct 2007 21:05:18 GMT

That didn't seem to paste correctly.. I'm guessing it parsed the XML.. here it is again with < and > replaced with # so hopefully it works. - #Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"# - #System# #Provider Name="Microsoft-Windows-IIS-W3SVC-WP" Guid="{670080D9-742A-4187-8D16-41143D1290BD}" EventSourceName="W3SVC-WP" /# #EventID Qualifiers="49152"#2276#/EventID# #Version#0#/Version# #Level#2#/Level# #Task#0#/Task# #Opcode#0#/Opcode# #Keywords#0x80000000000000#/Keywords# #TimeCreated SystemTime="2007-10-29T20:34:55.000Z" /# #EventRecordID#6875#/EventRecordID# #Correlation /# #Execution ProcessID="0" ThreadID="0" /# #Channel#Application#/Channel# #Computer#blue#/Computer# #Security /# #/System# - #EventData# #Binary#00171380#/Binary# #/EventData# #/Event#

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Steven S — Fri, 02 Nov 2007 18:39:02 GMT

Mike: Thanks for maintaining this helpful blog. I followed the process down to the event viewer (as shown above), but the error message reported isn't on the list, and I'm not sure what to do next. The error was: The worker process for application pool 'DefaultApplicationPool' encountered an error 'Cannot read configuration file ' trying to read global module configuration data from file '\\?\C:\Windows\system32\inetsrv\config\applicationHost.config', line number '0'. Worker process startup aborted. Can you please advise? Thanks. SJS

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

hyper — Tue, 06 Nov 2007 20:39:43 GMT

C:\Windows\System32\inetsrv>appcmd list apppools ERROR ( message:Configuration error Filename: \\?\C:\Windows\system32\inetsrv\config\applicationHost.config Line Number: 0 Description: Cannot read configuration file . ) in my iis i got 503 error.

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Darren — Wed, 28 Nov 2007 03:46:41 GMT

Mike, I had the exact same issue as Deb and Craig above. I upgraded from Vista Home Premium to Vista Ultimate, and IIS stopped working. Did you ever find a solution for them? The error I get is "The worker process for application pool 'Default' encountered an error 'Cannot read configuration file ' trying to read global module configuration data from file '\\?\C:\Windows\system32\inetsrv\config\applicationHost.config', line number '0'. Worker process startup aborted." Thanks, -Darren

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

AliM — Mon, 03 Dec 2007 14:21:20 GMT

I had the same problem, the above solution was not understandable, so looked for other solution and found the following post and it worked..... Can you check if you have leftover directory for pe-release version of framework in %windir%\Microsoft.Net\Framework (anything like v2.0.* other than v2.0.50727) - if so, delete those directories and restart the app-pool. Thanks

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Mike Volodarsky — Tue, 04 Dec 2007 15:39:56 GMT

Steven, Hyper, Darren,

The error you are getting indicates that the worker process failed to read server configuration. In the corresponding event log error message, look in the details tab for the <data></data> element, which will contain the HRESULT error code.

Most likely this will be 0x80070005, which means that the worker process was denied access to the applicationHost.config file. Check the permissions on the file and make sure that the IIS_IUSRS group has access (dont do this on Windows Server 2008 and Windows Vista SP1, where each worker process will have a separate copy of the applicationHost.config configuration file and wont have access to the main file).

If its another error, please post. If your problem is caused by the presence of pre-release versions of the .NET framework as per Alim's post, please let us know so we can investigate further.

Thanks,

Mike

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Darren — Sat, 08 Dec 2007 17:07:29 GMT

Mike, Setting the permissions worked for me. Thank you very much for your help. As an FYI, I didn't have any residual directories from a previous version of .NET. -Darren

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Rod Gibson — Wed, 19 Dec 2007 04:59:14 GMT

I am trying to run a PHP script that calls a MySQL database file on IIS7 and Error 500.0 is displayed. I tried to grant some permissions on the \Windows\System32\inetsrv folder but it doesn;t allow me to make changes (Access Denied). I ticked off the Users Account and rebooted but still it doesn't allow me to change security settings. I'm on my own machine at home so of course I am the admin and owner of the equipment. What can I do to revert this situation? Thanks a lot in advance. Rod

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Niculae Stratica — Sun, 03 Feb 2008 01:37:21 GMT

Hi, I had the same problem as Darren: IIS returned Error 503 on Vista Ultimate. The App error log showed this message: The worker process for application pool 'Classic .NET AppPool' encountered an error 'Cannot read configuration file trying to read global module configuration data from file '\\?\C:\Windows\system32\inetsrv\config\applicationHost.config', line number '0'. Worker process startup aborted. The Event ID is 2297. I do have .Net 1.1, 2.0.* and 3.0 in C:\Windows\Microsoft.NET\Framework. It does not make a difference whether I delete all the non 2.* or not. What made it work eventually was what Mike suggested i.e. add the IIS_IUSRS to the list of users for file applicationHost.config. Thanks Mike, Niculae

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

LJacob — Wed, 13 Feb 2008 06:15:04 GMT

In Windows 2008 Server I am getting an error as 'IIS not installed' though IIS is installed. The installscript which contains the check for IIS does the following set objIIS_Root = CoGetObject("IIS://localhost/W3SVC/1/Root", ""); if (IsObject(objIIS_Root)) then blnRetVal = TRUE; endif; Is there a workaround to skip this error in Windows 2008 Server? For Vista also we faced similar issue for which we selected the 'IIS6 Metabase Compatibility' from 'Windows Features on or off'.

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Mike Volodarsky — Wed, 13 Feb 2008 20:37:14 GMT

LJacob,

You need to install the Metabase Compatibility role service in Windows Server 2008 for the legacy WMI provider to work, just like you do on Vista.

Thanks,

Mike

Starting, stopping and recycling IIS 7.0 Web sites and application pools

IIS 7.0 Server-Side — Tue, 26 Feb 2008 05:07:34 GMT

As many of you know, IIS 7.0 provides the ability to start and stop Web sites, and application pools.

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Tomas — Sun, 09 Mar 2008 17:57:02 GMT

[quotation]

[/quotation]

And what is supposed to do on Vista 64 SP1 ? I get 0x80070005 error after installing SP1 and VS 2008.

Thanks!

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Chris — Thu, 13 Mar 2008 13:00:38 GMT

503 - applicationHost.config Was there a solution for Debs problem on 10th August She was getting the 503 error and in the event viewer recieved the event error id 2297 'Cannot read configuration file ' trying to read global module configuration data from file '\\?\C:\Windows\system32\inetsrv\config\applicationHost.config', line number '0' I am having this exact problem. I have also, (like Craig - Oct 4th - who was also experiencing this problem) upgraded from Vista Premium to Ultimate. I have tried the suggestion you gave of changing the applicationHost.config to .xml to ensure the xml is valid (by opening in IE ). It opens fine. Is there anything else I can try? Thanks Chris

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

James — Tue, 10 Jun 2008 22:42:22 GMT

Thanks, that worked. My apppool was stopped...Now everything works...

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

devi — Thu, 10 Jul 2008 10:44:23 GMT

very very good article...

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Bartek — Fri, 22 Aug 2008 00:39:45 GMT

Mike, excellent article and it helped me greatly. I started getting 503 "service unavailable" errors on my IIS 7.0 box and ended up needing to re-enable 64-bit mode through the command prompt. Details here: http://blog.evonet.com.au/post/2008/08/22/503-service-unavailable-errors-when-IIS-running-in-32-bit-mode-on-64-bit-Windows-Server-2008.aspx

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

tobia — Thu, 11 Sep 2008 22:04:31 GMT

With id event 2276 and error code 80131700 i resolved my problem simply with the removal of all 2.0.* framework version in "C:\Windows\Microsoft.NET\Framework", with the exception for only the v2.0.50727. And so It works! Thank U everyone!

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Ben — Mon, 16 Feb 2009 01:19:07 GMT

Excellent! A++++ Will read again Thanks for helping me solve my problem

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

new — Fri, 20 Feb 2009 12:48:20 GMT

hi, i am new to IIS world and know nothing about it and will b very grateful if anyone can help me with the error mentioned below....i am using iis7 ....every time i try to connect to localhost following error arises.... failed to connect (this is the caption of error) there was an error when trying to connect. do you want to retype your credentials and try again? details: 'Microsoft.Web.Administration,Version=7.0.0.0,culture=neutral,PublicKeyToken=31bf3856ad346e35' or one of its dependencies. the system cannot find the file specified. plzzzz help!!!

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Mike Volodarsky — Fri, 20 Feb 2009 16:56:22 GMT

new,

The error you describe doesnt quite make sense. Please provide a screenshot. Post to forums.iis.net for more help.

Thanks,

Mike

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

new — Sat, 21 Feb 2009 15:01:20 GMT

Thank you Mike! I am looking for answer from everywhere. I have another question....it may be very stupid to ask but I said that I dont have any know-how about it. My question is when we are connecting to localhost, through IIS 7.0 Manager, what do we write in localhost textBox?...is it the IP or any name or it remains as localhost??? and in the password textBox which password is to written??..I didnt put any password....

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

new — Sun, 22 Feb 2009 09:13:19 GMT

Okay! Thank you Mike.

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Charles T. Piano — Wed, 25 Mar 2009 23:07:37 GMT

Hi Mike, I am encountering "server error 503" into which causes my server to slowing down. This error can also make the iis totally stopped and hanged. I have search the solution about this problems and they suggested that it might be a memory leak on my server side, I am using Windows Server 2008, can you help me resolve this error, or does anyone can help me. Thanks, Charles

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

dev — Fri, 01 May 2009 11:50:49 GMT

Hi Mike I have 2 websites in IIS7, one for MOSS 2007 and another for WCF service. Both of them use different app pools. When I set the Managed pipeline mode to Integrated, both the websites don't come up, but works fine in Classic mode. The MOSS web site throws the error "Server application unavailable" . I don't see any error in event log either. When I try to browse the wcf service I get the error "HTTP Error 500.24 - Internal Server Error An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode." and most likely causes as "system.web/identity@impersonate is set to true". I have checked the status of apppool, they are all started. I did restart them again, but still the same error. I did not see errors in event log except for this information: A request mapped to aspnet_isapi.dll was made within an application pool running in Integrated .NET mode. Aspnet_isapi.dll can only be used when running in Classic .NET mode. Please either specify preCondition="ISAPImode" on the handler mapping to make it run only in application pools running in Classic .NET mode, or move the application to another application pool running in Classic .NET mode in order to use this handler mapping. Any help is highly appreciated. Are there any significant advantages that I get when using Integrated vs Classic. If there's no performance benefits, then probably I would stick with Classic mode. Thanks

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Fred — Sun, 03 May 2009 23:45:44 GMT

Thank you so much! Can the Apache installation be the reason why it was stopped? Sadly I have to use both servers and its a pain in the ... cause the services. Thank you!

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

melbournegam — Mon, 11 May 2009 15:16:46 GMT

Mike, u r sexy!! i like ur pic :) u r so cute!! though I hate IIS!!!

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Pavan Chawda — Fri, 28 Aug 2009 06:57:35 GMT

This link helped me to resolve the Service Unavailable problem http://haacked.com/archive/2007/05/21/the-iis-7-team-rocks.aspx

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Tom — Tue, 15 Sep 2009 00:57:56 GMT

Hey, this artical helped me a ton!! it was linked on a different random forum. but wondering if u can help me with this new problem, im running a classic ASP virtual directory on IIS7 and to get it working i had to change a line in my 'applicationhosts.config' file, the line was "" and i had to add " preCondition="bitness64" />" to the end of it so that i could use the 32bit option on my default app pool. but the error i got now is my OWAAUTH failing or summin, this is stoppping my external mail access and well all external access that i used to get on SBS03.. If u can help me please e-mail me any hints,tips,solutions to tom@territorymail.com i would greatly appreicate all help possible in this situation (PS my spelling is really bad so ignore the mistakes lol)

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

Janette — Thu, 05 Nov 2009 22:34:12 GMT

I have a problem with IIS 7 and framework 1.1. I have an old application (framework 1.1) My application run when I use framework 2 but when I trying to use framework 1.1 i get the error "Internet Explorer cannot display the webpage". I need to use framework 1.1 because when I try it to compile the application I get errors. The error of course because I need to compile with framework 1.1. I don't know why the application run using framework 2 and no 1.1 because the application is on 1.1. Please help

My IIS7 503 errors

excerpts. — Wed, 25 Nov 2009 06:52:01 GMT

IIS7, right, the savior? All I ever got, on my fresh new install, was "HTTP Error 503. The service...

Server Application Unavailable IIS7

Across Boundaries - ( Cipto ) — Wed, 09 Dec 2009 07:32:06 GMT

There are many things that caused this. read here for Step by Step and more accurate. Check Security

Service Application Unavailable IIS7

Across Boundaries - ( Cipto ) — Wed, 09 Dec 2009 07:39:11 GMT

There are many things that cause this. read here For more detail and accurate step.a Check Security,

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

mosse_t — Fri, 15 Jan 2010 22:28:41 GMT

Need help!!! I got this error on vista Ultimate 32bit and i cant find "iisfcgi.dll" on my system .....help plz C:\Windows\System32\inetsrv>appcmd list apppools ERROR ( message:Configuration error Filename: \\?\C:\Windows\system32\inetsrv\config\applicationHost.config Line Number: 0 Description: Cannot read configuration file . ) C:\Windows\System32\inetsrv>

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

nishant — Tue, 02 Feb 2010 19:55:46 GMT

Hi I am on a shared hosting service. These days I am getting 503 error quite frequently. I am not able to know the exact reason. how could I Know the exact reason why it is happening? I know about rapid fail protection which cause application pool to shut down for a particular number of error in a fixed time. but what type of error these can be for example these are not html errors obviously, not complilation error, then what type of errors/failures can cause application pool shutdown. I have installed blog on my site and generaly when i view blog oages I get 503 error so what type of error/failure we could think of which can cause application pool to shutdown.... I also have IIRF filter but none of the rule is broken. Ichecked in IIRF log file

re: Where did my IIS7 server go? Troubleshooting 503 "service unavailable" errors

vijshri — Thu, 08 Apr 2010 17:16:34 GMT

Hi, I want to redirect the user to a different page on the server whenever the application pool for the site is stopped. How do I configure this? Thanks