Persistent HTTP 503 Error When Accessing Protection Console

Products

• Carbon Black App Control (formerly Cb Protection)

Issue/Introduction

• HTTP 503 Errors when accessing Protection web console
• Parity Reporter Service Running
• Parity Server Service Running
• DAS Database Running
• IIS Reset had no effect
• Increase of IIS Private memory usage had no effect

Environment

• App Control Server: All Supported Versions
• Microsoft Windows: All Supported Versions​

Cause

The IIS install has been corrupted

Resolution

In this situation both App Control Server and IIS will require a full reinstall following these steps.

Additional Information

• Reference this MSDN article on performing a clean IIS reinstall: https://blogs.msdn.microsoft.com/friis/2017/01/16/how-to-perform-a-clean-reinstallation-of-iis/
• Please reference the user guide and/or release notes relevant to the App Control Server version that is being reinstalled
• If the DefaultAppPool is crashing check the Application Event Viewer for possible errors to determine specific cause similar to this article