There are no errors in the Windows event logs. If the requested application is running in-process, then Inetinfo.exe takes the request. Whether all requests to the app are hanging or just specific URLs 3. 1-~10 times a week, usually over the weekend, our website will stop responding to external requests. After that, ping and request to the IIS server coming from the external works. From localhost PS: > telnet 127.0.0.1 80 GET / HTTP/1.1 HTTP/1.1 400 Bad Request [ etc. ] The primary purpose of that tool is to show running instances of IIS application pools, including their windows process Id (corresponding to the PID shown in Task Manager for the w3wp.exe running that pool instance). User-408987462 posted I found reason of my problem in this blog post . and navigate to Process Model and Identity. We are now finding that IIS > will just stop responding to requests for our site's pages after a > certain amount of time. In this troubleshooter, I will be using IIS 8. This can be done by having the handlers implement the IReadOnlySessionState instead of IRequiresSessionState. It seems to be a cleanup operation. There, select the Enable box. The possible downside is, of course, that the handlers will not have access to store/update the Session, but the upside is that more than one request can run in parallel. It's generally caused by all available application threads becoming blocked, causing subsequent requests to get queued (or sometimes by the number of active requests exceeding configured concurrency limits). Before an IIS process receives a request to execute, some preliminary processing occurs that is described in the following steps: A request arrives. API reference; Downloads; Samples; Support For a unknown reason, one of our IIS server stops responding to external request after a couple of minutes/hours. Once the pages start to hang on loading, the only way to get the pages to respond again is to stop/restart the IIS services. Figure 1: Getting the ID of your web site The IIS Express logs do not show any requests when this happens; however, in debug mode, VS can see that the browser did make a request. API reference; Downloads; Samples; Support In IIS Manager, expand the local computer, expand the Application Pools folder, right-click the application, and then click Properties. Windows Dev Center Home ; UWP apps; Get started; Design; Develop; Publish; Resources . Sporadically about, every 2-3 weeks IIS stops responding to requests. This problem has existed for the life of the project. Click OK. Go to Advanced Settings. If I kill the aspnet_wp.exe it recovers and everything is fine again. Open the IIS Manager and select Sites, as shown in Figure 1. Every couple more hours (I think I read 23 hours) the server just stops listening to inbound requests and runs Application_End. 2. The only way i can make the IIS works fine is to open a web browser and then browse to a web site. ie. No breakpoints inside of the ActionResult get hit though, so I know it isn't getting called. etc. Check the Application Pool Identity in IIS when running an ASP.NET Core Application If you are using a Custom Account, you will probably need to give full permissions to that account as well. IIS 7.5 stops serving external requests randomly 2 Running IIS 7.5 on Windows 2008 R2. When this happens, I RDP into the server and refresh the browser on the server. > running IIS 5, and using ASP with SQL 7. When the WSUS server role was installed, it installed the XPress compression schema module (suscomp.dll) that loaded in every application pool in IIS. When performing a security scan against an IIS 6 server, the web site stops responding to requests from outside the firewall and from machines on the LAN about 35 minutes into the scan. PID 8180 corresponds to the svchost.exe process for IIS. I'm having the same issue and it's causing problems with our load balancer as well. Next, get a detailed request trace In the Request queue limit section, select the Limit the kernel request queue to check box, and type the maximum number of queued requests. Every couple of hours IIS resets itself. Other non-asp.net stuff works but asp.net requests (even for other web apps than the one I'm debugging) dont't even appear in the IIS log. However, requests to the IP (not to localhost) to the web site run fine. All relevant services respond to shutdown, and start up. Recycling the App Pool and even restarting the site will not allow the site to . I can't even view http://localhost on the machine, get page cannot be found. No load balancer is going to failover on a 404. 1 IIS with an exchange back-end isn't responding to valid queries, but will throw 400 Bad Request for invalid queries. You could also perhaps work around this by not calling the second . If the requests are currently hanging, this will instantly show you 3 critical things: 1. However, occasionally, the web service has to be stopped and restarted before things start working again. Additional troubleshooting steps (but potentially unsafe): It looks like the server is in hibernation or . During a heavy development/debugging session, very occasionally IIS will seem to stop responding to asp.net requests. Quite often, this lasts for a minute or so and then all is well. If you right-click or double click an app pool instance there, you MAY see also a "request monitor". 2. This will show you the ID of each website hosted on your server. [Solved]-IIS stops responding to requests until restart after running this method-C# Search score:1 Accepted answer By default, Asp.Netallows only one concurrent request per Session. IIS stops responding to http requests. 30-45 min), the IIS service stops responding to browser requests (although the service shows it is running in the service manager). Troubleshooting for IIS 7 and above https: . This is apparently done so as to fix up any memory leaks, resource deadlocks etc. Problem #2: Installing ASP.NET Core Runtime An external page request will restart the app. It appears to be running but we cannot load any > of our site's pages, even on the Web server itself. As a test, I let the page try to load for about 20 minutes before closing Internet Explorer 7 (our users also use IE 7). So if you have one request running, and during that request you are trying to run another request in the same session, then you are effectively deadlocking yourself. Then, to enable IIS to generate these logs, you need to do two things: 1) Enable Failed Request Tracing for the site you want to trace In InetMgr, select your site in the left-hand tree view, then under Actions on the right click "Failed Request Tracing ". Windows Dev Center Home ; UWP apps; Get started; Design; Develop; Publish; Resources . Check your httperr.log in system32\logfiles\httperr and you'll see it sending a 404 when you hit the stopped website. I keep a browser window open on the server pointed to the internal IP. An IIS website hangs whenever it appears to stop serving incoming requests, with requests either taking a very long time or timing out. Iis - localhost works 127.0.0.1 does not IIS; IIS web site stops responding to requests on Port 80; Iis - Why doesn't IIS 7.5 FTP respect the passive port range for plain ftp; Why isn't IIS logging the 400, or What is responding with 400 Restart all the web related services, but still doesn't respond to web requests. Looks like http.sys is responding with a 404 even though the website is stopped. To pinpoint it to being a IIS issue and not firewall/routing issue you could stop the IIS service and run a simple application like PortListener and configure it to listen on port 80, after doing that telnet to your private IP on port 80 from another machine and see if telnet connects. > telnet 127.0.0.1 80 GET / HTTP/1.1 [no reply] This is the same error from other hosts, and IIS is listening on 443, 80, and 444. The Web server can > load other pages fine. You will need this ID to determine which W3SVC* directory to analyze. Archived Forums > Troubleshooting for IIS 7 and above. Inetinfo.exe or DLLHost.exe determines if the request is valid. Click the Performance tab. Which URLs are involved 2. If the 32-bit version of suscomp.dll is loaded in an application pool that runs in 64-bit mode, you experience this issue. If not, then DLLHost.exe takes the request. The module/request stage they are hanging in. However, requests to the IP (not to localhost) to the web site run fine. When performing a security scan against an IIS 6 server, the web site stops responding to requests from outside the firewall and from machines on the LAN about 35 minutes into the scan.

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