In ZENworks Control Center, click Bundles.
In the left column, select OES23.4to24.4upgrade bundle.
Click Action > Assign to Device.
Click the down-arrow next to Servers, then select the servers to which you want to assign the bundle.
Click OK > Next.
Select the Distribution Schedule and click Next.
Select the appropriate distribution type and select Install Immediately after Distribution.
Click Next > Finish.
The upgrade process includes an automatic server reboot. After the reboot, log in to the server add the OES 24.4 media (CD or network source) and then run yast2 channel-upgrade-oes to complete the OES services reconfiguration. You will be prompted for the eDirectory or Domain Services for Windows.