Installing the most recent supported operating system service packs

Last Updated : Mar 19, 2026 |

About this task

Avaya recommends installing Operating System Service Packs and Security Hotfixes in a controlled manner during the initial deployment. Installing subsequent Operating System updates must be carefully controlled and tested within a planned Maintenance Window.

Avaya tests the Omnichannel software on Windows servers using the most recent updates to the operating system. However, as Microsoft publishes new Operating System updates monthly, some precautions are necessary to ensure that updates published after the Omnichannel software releasedo not break Oceana features or functions.

Note:

  • Install and test the Operating System updates in the Preproduction solution before installing them in the Production solution.

  • In Omnichannel Database HA solutions, to minimize the number of server switchovers needed, perform this procedure first on the current backup server and then on the other Omnichannel server.

Before you begin

  • Install and configure Microsoft Windows Server 2019 (Desktop Experience) Standard or Datacenter edition on your server.

  • Disable Operating System Automatic updates.

Procedure

  1. Review the published Microsoft updates to determine the most recent patches or service packs for the Windows Server 2019 (Desktop Experience) Standard or Datacenter OS.
  2. Download the appropriate Windows Server 2019 updates for the Omnichannel software installed on this server.
  3. Plan a Maintenance Window.
    1. At the start of the Maintenance Window, take a VMware snapshot of the Omnichannel server.
    2. Install the most recent Windows Server 2019 Operating System Updates, following the Microsoft Installation instructions.
    3. Some OS updates and hotfixes might require a reboot of the Omnichannel server.
    4. Do a Sanity test of Oceana to ensure the OS updates and hotfixes have not broken any Oceana feature and function.
    5. If the OS updates and hotfixes break any feature and function, revert to the VM snapshot taken before applying the updates and notify Avaya of the issue.
    6. If the OS updates and hotfixes do not break any feature or function, delete the VM snapshot.
    7. For Omnichannel Database HA solutions, ensure Cache DB Mirroring is working before returning the solution to Production.
  4. End the Maintenance Window.