"HTTP 503.2 - Service Unavailable..." appears in OfficeScan (OSCE)

Summary

You encounter the following error and it is not resolved even after recreating the OSCE server's virtual directory:

HTTP Error 503.2 - Service Unavailable
The serverRuntime@appConcurrentRequestLimit setting is being exceeded

The most likely causes are the following:

In Internet Information Services (IIS):
- The setting is too low.
- The applicaiton is taking too long for the current load.
In OSCE, the issue might appear after doing the following procedures:
- Rebuilding the OSCE server
- Upgrading the OSCE server to a new patch
- Migrating the OSCE server

Details

To resolve the error:

Edit Application Pool from the OSCE server:
1. Open IIS Manager.
2. Go to Application Pools.
3. On the right panel, highlight OfficeScanAppPool.
4. Click Advanced Settings in the Actions pane.
5. Set the Queue length to "10000".
6. Click OK.
Refresh AppConcurrentRequestLimit via CMD:
1. From the OSCE server, open CMD:
  CD C:\Windows\System32\inetsrv
2. Type the following:
  appcmd.exe set config /section:system.webserver/serverRuntime /appConcurrentRequestLimit:100000
Restart the following Windows services:
- OfficeScan Master Service
- IIS Admin Service
- World Wide Web Publishing Services
Check if the OSCE web console server is accessible.

Rating:

Category:

Configure; Troubleshoot

Solution Id:

1118364

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