Official from PAM - https://support.sap.com/content/dam/library/ssp/infopages/pam-essentials/TIP/PAM_DS_42_SP5_0_b.pdf -
Please reference page 7: (2) From DS 4.2 SP5, Windows 32-bit client is no longer available. It is recommended to change to Windows 64-bit client environment.
Moderator.