Request failed with HTTP status 503 Server Error
Problem: When 100's of users ae trying to access Reporting services report then, SSRS throws error as below : "Request failed with HTTP status 503 Server Error" and how to resolve this error Solution: From experience, this issue can be caused by multiple reasons Problem might be related to: 1 - TCP/IP Port Exhaustion: When a client initiates a TCP/IP socket connection to a server, the client typically connects to a specific port on the server and requests that the server respond to the client over a short-lived TCP or UDP port. The default range of short-lived ports used by client applications is 1025 through 5000. Under certain conditions, it is possible that the available ports in the default range are exhausted. 2 - If you are using any custom assembly method in any of your report (say for example PrivateFontCollection class or anything else), if yes then you might want to review that 3 - Change MaxActiveReqForOneUser from its default value o...
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