During installation of Client Security 14.x we are receiving a notification saying Overlapped I/O operation is in progress. Running the uninstallation tool between attempts has no impact.
This points towards a Microsoft-related issue which can be remedied by renaming a Microsoft folder, running our uninstallation tool and reinstalling Client Security. To verify this, look for events with ID 997 within the Windows Event Viewer. Steps to resolve:
Rename the following folder C:\ProgramData\Microsoft\Crypto\RSA\S-1-5-18 to C:\ProgramData\Microsoft\Crypto\RSA\S-1-5-18_BAK