Environment
- App Control Agent: 6.0.2.x and higher
Symptoms
Upgrade log shows the following failure error message:
1: <Bit9 Log> Starting ParityDriver
1: <Bit9 Log> (FAILURE) Unable to start ParityDriver service
Cause
- The old ParityDriver was not deleted. There are 2 different versions of ParityDriver files on the system.
- A separate security application prevented the Parity Driver from loading.
Resolution
- On the endpoint, run the following on an elevated command prompt while in the %program files%\Bit9\Parity Agent directory:
dascli password {CLI password here}
dascli tamperprotect 0
net stop parity
fltmc unload paritydriver
- Go to C:\Windows\System32\Drivers and delete the Parity.sys file.
- Go to C:\Windows\System32\Drivers and delete the Parity.sys file.
- Go to C:\Windows\System32\DRVSTORE\ and delete the Parity_... folder.
- Open the registry and go to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\DIFX and delete the Parity_... registry key folder if it’s still present.
- Follow these steps to manually upgrade the Agent but add NOSTARTPARITY and NOSTARTDRIVER on the command.
Example:
msiexec /i {path}\{filename}.msi NOSTARTPARITY=1 NOSTARTDRIVER=1 /l*v {path}\manual_install.log
msiexec /p {path}\{filename}.msp NOSTARTPARITY=1 NOSTARTDRIVER=1 /l*v {path}\manual_install.log
- In the registry, go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\paritydriver.
- Add the DWORD called "Start" if it’s not present and set it to 0.
- Reboot the machine.
- Open a command prompt and change directory to %program files%\Bit9\Parity Agent. Run “dascli status” to verify the version.
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