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"HTTP Error 503.2 - Service Unavailable" appears when logging in to the OfficeScan (OSCE) management console

    • Updated:
    • 9 Apr 2020
    • Product/Version:
    • OfficeScan 10.6
    • OfficeScan 11.0
    • OfficeScan 11.0
    • Platform:
    • Windows 2008 Enterprise Server
    • Windows 2008 Enterprise Server Edition 64-bit
    • Windows 2008 Standard Server Edition
    • Windows 2008 Standard Server Edition 64-bit

NOTE: You are viewing an archived article because the product(s) tagged is no longer supported or the information mentioned is already outdated.


The following error message appears when trying to log on to the OfficeScan management console:

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

After attempting to reboot the server, the OfficeScan Master service will not start. If you log on to the OfficeScan management console, it shows the following error message:

OfficeScan Master Service was stopped. Start service and try again.

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