Steps to apply M365 Manager Plus service pack

If the product runs as an application, click Start > All Programs > M365 Manager Plus > Stop M365 Manager Plus.
If the product runs as a Windows service, click Start > Run > type services.msc > Stop ManageEngine M365 Manager Plus.

Execute the stopDB.bat file stored in the <M365 Manager Plus>\bin directory.
Back up M365 Manager Plus by zipping the contents of the <M365 Manager Plus> directory.
If you're using Microsoft SQL Server, take a backup of the database, too.
Open the Command Prompt as an administrator and execute the UpdateManager.bat file stored in the <M365 Manager Plus>\bin directory.
Click Browse and select the PPM file (service pack file) that you downloaded.
Click Install. Depending on the amount of data to be migrated, the installation procedure may take a few minutes. Please do not terminate the process prematurely. The certificate required to verify the service pack's integrity will be automatically imported by the Update Manager.
If the automatic certificate import process fails, please import the certificate manually. Otherwise, click Close and then Exit to quit the Update Manager tool.
Start M365 Manager Plus:
- If the product runs as an application, click Start > All Programs > M365 Manager Plus > Start M365 Manager Plus.

If the product runs as a Windows service, click Start > Run > type services.msc > Start ManageEngine M365 Manager Plus

Note:

If you need to apply more than one service pack, follow the same instructions for each installation.
If you have enabled high availability, then follow the steps given below:

Shut down both the primary and standby servers.
Follow steps (2) through (8) given above, and apply the service pack in both the servers.
Start both the primary and standby servers.

How do I find my current build number?