Symantec Endpoint Encryption Management Server has the ability to create a report for aging systems or non-reporting computers. For example, if you would like to create a report that will provide you all machines that have not checked in within the last 20 days, this report will help you do that.
TIP: For additional reporting help, see the following articles:
195890 - Building Custom Reports with Symantec Encryption Management Server
195857 - Symantec Endpoint Encryption Database Maintenance - Cleanup old machines and client data
To be able to do this, login to the SEE Management Server. On the left side of the window look for "Non-Reporting Computers".
In the example below, we want to see all the machines that haven't checked in within the last 7 days. Once you enter this amount, click "Run" and you will see the systems applicable for this value:
In the above screenshot you'll also notice if you right-click on the report and choose "Configure Columns Displayed", you can select or deselect columns to help customize your report:
You will also notice in the screenshot you can export the spreadsheet above into .csv format to further analyze the reporting.