cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Summary

If when accessing the FNMS Web UI you get error "HTTP Error 503. The service is unavailable" then this article provides some suggestions on the common causes

Symptoms

This article covers the scenario when accessing the Web UI you see http error 503 : The service is unavailable, similar to the screenshot below:
HTTP Error 503

Cause

This error appears when the web application is unavailable, this means that the site is up and running but the underlying application pools have an issue. The first place to check is the Application Pools node in IIS, see this example screenshot:

Application Pool in IIS showing that 2 of the pools are in a Stopped state

As you can see above, the "Flexnet Manager Suite" application pool is in a stopped state which is what is causing the http error 503.

Resolution

In order to resolve this you should start the application pool and if it fails to start you need to look at Windows event logs to see what errors are shown.

This is most common when a specific account is used as the application pool identity (common configuration) as you can see in the screenshot. In most cases when this error occurs it is because the username / password is incorrect and so the event log will show failed logon attempts.

In this case, simply update the password for the Identity account in the Application pool advanced settings and restart the application pool.

Additional Information

While the identity account is the most common cause of the application pool being stopped, it is not the only cause. If updating the password doesn't work, try and restart the application pool and investigate Windows event logs to find specific details on why it failed to start.
Was this article helpful? Yes No
No ratings
Comments
brad_tyley
By
Level 2

Hi @mrichardson We have this same error but checking FNMEA server IIS was not installed as a feature so can only presume this is not the cause. FNMEA Admin Service is running.

Komay2004
By
Level 2

Thanks for a great article!

Version history
Last update:
‎Dec 11, 2018 10:51 PM
Updated by: