App Control: Unable to Install App Control Agent Due to ParityDriver Issues

Products

• Carbon Black App Control (formerly Cb Protection)

Issue/Introduction

• Reinstallation Agent failed
• Errors in Logs installation file 

Starting ParityDriver Rollback:
(WARNING) ParityDriver service does not exist.
(FAILURE) Unable to start ParityDriver service

Environment

• App Control Agent (formerly CB Protection): All Supported Versions

Cause

There could be leftover registry keys or files that were in use and could not be deleted even if the box was rebooted

Resolution

1. Log on to the affected endpoint
2. Delete the C:\windows\system32\drivers\parity.sys
3. Delete the C:\windows\system32\drvstore\parity* directory
4. Then install using the following command line: 

msiexec /i {path}\{filename}.msi NOSTARTPARITY=1 NOSTARTDRIVER=1 /l*v {path}\manual_install.log

5. Back to C:\windows\system32\drvstore\Parity*\ and right clicked the INI or INF file and hit Install
6. Reboot the box
7. Confirm the agent and the driver should be running

Additional Information

This issue may happen even if the Agent Uninstall Utility has been run