IIS 7.5 ile 503.3 service unavailable hatası alıyorsanız
- Hata HTTP Error 503.3 - Service Unavailable ASP.NET rejected this request because the queue limit was exceeded. - Hata Nedeni •The queue limit for ASP.NET has been exceeded. (machine.config system.web/processModel@requestQueueLimit) - Hatayı Çözmek için önerilen durumlar •Try increasing the value of the setting. •Check that external resources (for example, disk, database, etc..) are performing at expected levels. •Check that the application has not deadlocked. - Çözüm aşağıda IIS Manager > ApplicationPools > Advanced Settings Queue Length : 65535 and finally (the missing piece of the puzzle), the command line: appcmd.exe set config /section:serverRuntime /appConcurrentRequestLimit:100000 The web.config setting mentioned in the main post was irrelevant. 10000 concurrent connections, no problems.