The latest PAM360 MSP version is 4100. If you are using an earlier version, you need to apply upgrade pack.
Download Upgrade Pack
|From 4000 / 4001 / 4002 to 4100||Upgrade pack 4000 / 4001 / 4002 to 4100
High Availability (HA) SetupDirect installation file for 4100
Note: If you've configured HA for your PAM360 MSP instance, your secondary application server should always run the same version as your primary server. For instance, if you're upgrading to 4100, you should concurrently reconfigure HA and set up a fresh secondary instance that runs 4100. Additionally, ensure that the software architectures are also the same.