Dual client installation scenarios

HCL Client Application Access (HCAA) and HCL Notes release 11.0 or later can co-exist on your system. In this case, you can use either Notes® or HCAA. When you open an application and Notes® is not running, the application is opened in HCAA.

The following table describes dual-client installation scenarios, both supported and unsupported. Review these scenarios before you install HCAA.

Table 1. Dual-client installation scenarios
Existing clients New installation Results
Notes® 8.5.x or earlier ICAA
  • On Mac OS: HCAA and Notes® co-exist and ICAA uses the Notes® data directory and Preferences file.
  • On Windows™: You must uninstall Notes® before you install ICAA. ICAA can't co-exist with Notes® 8.5.x or earlier releases. For steps to reuse your Notes® data in HCAA, see Migrating Notes data to HCL Client Application Access (Windows) before you install ICAA.
Notes® 9.x or later without the Notes® Browser Plug-in ICAA HCAA and Notes® co-exist and ICAA uses the Notes® data directory.
Notes® 9.x or later with bundled Notes® Browser Plug-in ICAA The Notes® Browser Plug-in is removed. ICAA and Notes® co-exist and HCAA uses the Notes® data directory.
Stand-alone Notes® Browser Plug-in 9.0.1 FixPack 6 or earlier ICAA The Notes® Browser Plug-in is uninstalled. ICAA reuses the Notes® data directory.
Notes® 9.x or later and ICAA ICAA upgrade ICAA is upgraded and continues to co-exist with Notes®.
Notes® 9.x or later and ICAA Notes® Fix Pack upgrade Notes® is upgraded with the Fix Pack and continues to co-exist with ICAA.
Notes® 9.0.0 and ICAA Notes® 9.0.1 upgrade You must uninstall ICAA, upgrade Notes®, and reinstall ICAA.
ICAA Notes® 9.x or later
  • On Mac OS, a clean installation of Notes® is supported when ICAA is already installed.
  • On Windows™, a clean installation of Notes® is not supported when ICAA is already installed. To use both Notes® and ICAA, uninstall ICAA, install Notes®, then reinstall ICAA.
ICAA 2.0.1 standalone or later and HCAA 3.0 HCAA upgrade ICAA is upgraded to HCAA.
HCL Notes 11 and HCAA 3.0 HCAA

HCAA and HCL Notes® co-exist and HCAA uses the Notes® data

directory.